Ebyte E22-400T30S User manual

E22-400T30S User Manual
SX1262 433/470MHz 1W LoRa Wireless Module

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S_User Manual _EN
Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co., Ltd.
1
DISCLAIMER AND COPYRIGHT NOTICE ...................................................................................................................... 3
CHAPTER 1 PRODUCT OVERVIEW ................................................................................................................................. 4
1.1 PRODUCT INTRODUCTION ............................................................................................................................................. 4
1.2 FEATURES ......................................................................................................................................................................4
1.3 APPLICATION SCENARIO ................................................................................................................................................5
CHAPTER 2 SPECIFICATIONS .......................................................................................................................................... 6
2.1 LIMIT PARAMETER ........................................................................................................................................................ 6
2.2 WORKING PARAMETERS ................................................................................................................................................6
CHAPTER 3 MECHANICAL DIMENSIONS AND PIN DEFINITIONS ...........................................................................7
CHAPTER 4 RECOMMENDED CONNECTION DIAGRAM ........................................................................................... 8
CHAPTER 5 FUNCTION DETAILED EXPLANATION .................................................................................................... 9
5.1FIXED-POINT LAUNCH .................................................................................................................................................... 9
5.2 BROADCAST TRANSMISSION ......................................................................................................................................... 9
5.3 BROADCAST ADDRESS ................................................................................................................................................ 10
5.4 LISTENING ADDRESS ...................................................................................................................................................10
5.5 MODULE RESET .......................................................................................................................................................... 10
5.6 DETAILED EXPLANATION OF AUX .............................................................................................................................. 10
5.6.1 Serial Port Data Output Indication ...................................................................................................................... 10
5.6.2 Wireless Transmission Indication ........................................................................................................................11
5.6.3 The module is being configured .......................................................................................................................... 11
5.6.4 Precautions .......................................................................................................................................................... 11
CHAPTER 6 WORKING MODE ........................................................................................................................................12
6.1 MODE SWITCH ............................................................................................................................................................ 12
6.2 GENERAL MODE (MODE 0) .........................................................................................................................................13
6.3 WOR MODE (MODE 1) ...............................................................................................................................................13
6.4 CONFIGURATION MODE (MODE 2) ..............................................................................................................................13
6.5 DEEP SLEEP MODE (MODE 3).....................................................................................................................................14
CHAPTER 7 REGISTER READ AND WRITE CONTROL ..............................................................................................14
7.1 COMMAND FORMAT .................................................................................................................................................... 14
7.2 REGISTER DESCRIPTION ..............................................................................................................................................15
7.3 FACTORY DEFAULT PARAMETERS .................................................................................................................................17
CHAPTER 8 USE OF RELAY NETWORKING MODE ................................................................................................... 17
CHAPTER 9 PC CONFIGURATION INSTRUCTIONS ................................................................................................... 19
CHAPTER 10 HARDWARE DESIGN ............................................................................................................................... 19
CHAPTER 11 FREQUENTLY ASKED QUESTIONS .......................................................................................................21
11.1 THE TRANSMISSION DISTANCE IS NOT IDEAL .......................................................................................................... 21
11.2 MODULES ARE EASILY DAMAGED .............................................................................................................................21
11.3 BER IS TOO HIGH ....................................................................................................................................................21

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CHAPTER 12 WELDING OPERATION INSTRUCTIONS .............................................................................................. 22
12.1 REFLOW TEMPERATURE ............................................................................................................................................ 22
12.2 REFLOW SOLDERING PROFILE .................................................................................................................................. 22
CHAPTER 13 RELATED MODELS .................................................................................................................................. 23
CHAPTER 14 ANTENNA GUIDE ..................................................................................................................................... 23
14.1 ANTENNA RECOMMENDATION .................................................................................................................................. 23
CHAPTER 15 BATCH PACKAGING ................................................................................................................................ 24
REVISE HISTORY ..............................................................................................................................................................24
ABOUT US .......................................................................................................................................................................... 25

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Disclaimer and Copyright Notice
Information in this document, including URL references, is subject to change without notice. This
document is provided "as is" without warranty of any kind, including any warranties of
merchantability, fitness for a particular purpose, or non-infringement, and any warranties mentioned
elsewhere on any proposal, specification, or sample. This document disclaims any responsibility,
including liability for infringement of any patent rights arising out of the use of the information in
this document. No license, express or implied, to any intellectual property right is hereby granted by
this document, whether by estoppel or otherwise.
The test data obtained in this article are all obtained from Ebyte laboratory tests, and the actual
results may be slightly different.
All trade names, trademarks and registered trademarks mentioned herein are the property of their
respective owners and are hereby declared.
The final interpretation right belongs to Chengdu Ebyte Electronic Technology Co., Ltd.
Notice :
Due to product version upgrades or other reasons, the contents of this manual may change. Ebyte Electronic Technology Co., Ltd.
reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Chengdu
Ebyte Electronic Technology Co., Ltd. makes every effort to provide accurate information in this manual, but Chengdu Ebyte
Electronic Technology Co., Ltd. does not guarantee that the content of the manual is completely error-free. All statements in this
manual , information and advice do not constitute any express or implied warranty.

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Chapter 1 Product Overview
1.1 Product Introduction
E22-400T30S is a new generation of LoRa wireless module, based on
SEMTECH's SX1262 radio frequency chip wireless serial port module (UART),
with a variety of transmission methods, working in the (410.125 ~ 493.125MHz)
frequency band (default 433.125MHz), LoRa spread spectrum technology , TTL
level output, compatible with 3.3V and 5V IO port voltage.
E22-400T30S adopts a new generation of LoRa spread spectrum technology.
Compared with the traditional SX1278 solution, the SX1262 solution has a
longer transmission distance, faster speed, lower power consumption, and
smaller size; it supports air wake-up, wireless configuration, carrier monitoring, and automatic neutralization. Relay, communication
key and other functions, support subpackage length setting, and can provide customized development services.
1.2 Features
Based on SX1262, a new LoRa spread spectrum modulation technology is developed, which brings longer communication
distance and stronger anti-interference ability;
Support automatic relay networking, multi-level relay is suitable for ultra-long-distance communication, and multiple networks
run simultaneously in the same area;
Support users to set the communication key by themselves, and it cannot be read, which greatly improves the confidentiality of
user data;
Support LBT function, monitor the channel environment noise before sending, which can greatly improve the communication
success rate of the module in harsh environments;
Support RSSI signal strength indication function, used to evaluate signal quality, improve communication network, and measure
distance;
Support wireless parameter configuration, send command packets wirelessly, remotely configure or read wireless module
parameters;
Support wake-up over the air, that is, ultra-low power consumption function, suitable for battery-powered applications;
Support fixed-point transmission, broadcast transmission, channel monitoring;
Support deep sleep, the power consumption of the whole machine is about 2uA in this mode;
Support global license-free ISM 433MHz frequency band, support 470MHz meter reading frequency band;
The module has built-in PA+LNA, and the communication distance can reach 10km under ideal conditions;
The parameters are saved after power-off, and the module will work according to the set parameters after power-on;
Efficient watchdog design, once an exception occurs, the module will automatically restart and continue to work according to the
previous parameter settings;
Support data transmission rate of 0.3k～62.5kbps;
Support 3.3~5.5V power supply, and the best performance can be guaranteed if the power supply is greater than 5V;
Industrial-grade standard design, supporting long-term use at -40～+85℃;
Double antennas are optional (IPEX/stamp hole), which is convenient for users to develop secondary and facilitate integration.

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1.3 Application Scenario
Home security alarm and remote keyless entry;
Smart home and industrial sensors etc.;
Wireless alarm security system;
Building automation solutions;
Wireless industrial grade remote control;
Health care products;
Advanced Meter Reading Architecture (AMI);
Automotive industry applications.

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Chapter 2 Specifications
2.1 Limit Parameter
Main Parameters
Performance
Remark
Min.
Max.
Power supply voltage (V)
3.3
5.5
Exceeding 5.5V may permanently burn the module
Blocking power (dBm)
-
10
Less chance of burning when used at close range
Working temperature (℃)
-40
+85
Industrial grade
2.2 Working Parameters
main parameters
Performance
Remark
Min.
Typical
value
Max.
Working voltage (V)
3.3
5.0
5.5
≥5.0V guaranteed output power
Communication level (V)
-
3.3
-
Using 5V level is recommended to add level conversion
Working temperature (℃)
-40
-
85
Industrial design
Working frequency band (MHz)
410.125
-
493.125
Support ISM frequency band
power
consumpt
ion
Emission current (mA)
-
610
-
Instantaneous power consumption
Receive current (mA)
-
17
-
-
Sleep current (uA)
-
2
-
software shutdown
Maximum transmit power (dBm)
29.5
30.0
30.5
-
Receiving sensitivity (dBm)
-146
-147
-148
Air rate 2.4 kbps
Air rate (bps)
0.3k
2.4k
62.5k
User Programmable Control
Main Parameters
Description
Remark
Reference distance
10km
Clear sky, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4kbps
Launch length
240 Btye
Subpackage 32/64/128/240 bytes can be sent by command setting
Cache capacity
1000 Btye
-
Modulation
LoRa
A new generation of LoRa modulation technology
Communication Interface
UART serial port
TTL level
Encapsulation
SMD
-
Interface
stamp hole
Pitch 2.54mm
Dimensions
25*40.5mm
-
Antenna interface
IPEX/stamp hole
Equivalent impedance about 50Ω

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Chapter 3 Mechanical Dimensions and Pin Definitions
Pin Number
Pin
Name
Pin Direction
Pin Usage
1
M0
Input (very weak pull-up)
Cooperate with M1 to determine the 4 working modes of the module (not
floating, if not used, it can be grounded)
2
M1
Input (very weak pull-up)
Cooperate with M0 to determine the 4 working modes of the module (not
floating, if not used, it can be grounded)
3
RXD
Input
TTL serial port input, connected to the external TXD output pin;
4
TXD
Output
TTL serial port output, connected to external RXD input pin;
5
AUX
Output
Used to indicate the working status of the module; the user wakes up
the external MCU, and outputs a low level during the initialization of
the power-on self-test; (can be suspended)
6
VCC
Input
Module power positive reference, voltage range: 3.3 ~ 5.5V DC
7
GND
Input
Module ground
8
C2CK
Input
Clock pin when the program is loaded (dangling, users do not need to connect)
9
GND
Input
The ground pin when the program is loaded (dangling, the user does not need
to connect)

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10
C2D
Input
Data pin when the program is loaded (dangling, users do not need to connect)
11
+3.3V
Input
The power supply pin when the program is loaded (the user does not need to
connect, it is floating)
12
P2.7
Input/ Output
NC pin, this pin needs to be suspended (for subsequent expansion)
13
P1.5
Input/ Output
NC pin, this pin needs to be suspended (for subsequent expansion)
14
P1.6
Input/ Output
NC pin, this pin needs to be suspended (for subsequent expansion)
15
GND
-
Fixedly
16
GND
-
Fixedly
17
GND
-
Fixedly
18
ANT
Output
Antenna interface (high-frequency signal output, 50Ω characteristic
impedance)
Chapter 4 Recommended Connection Diagram
No.
A brief description of the connection between the module and the microcontroller (the above figure takes the
STM8L microcontroller as an example)
1
The wireless serial port module is TTL level, please connect it with TTL level MCU.
2
For some 5V microcontrollers, it may be necessary to add 4-10K pull-up resistors to the TXD and AUX pins of the
module.

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Chapter 5 Function Detailed Explanation
5.1Fixed-point launch
5.2 Broadcast Transmission

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5.3 Broadcast Address
Example: Set the address of module A to 0xFFFF, and the channel to 0x04.
When module A is used as a transmitter (same mode, transparent transmission mode), all receiving modules under the 0x04
channel can receive data to achieve the purpose of broadcasting.
5.4 Listening Address
Example: Set the address of module A to 0xFFFF, and the channel to 0x04.
When module A is used as a receiver, it can receive all the data under the 0x04 channel to achieve the purpose of monitoring.
5.5 Module Reset
After the module is powered on, AUX will output low level immediately, and perform hardware self-test, and set the working
mode according to user parameters;
During this process, AUX keeps low level, and after the completion, AUX outputs high level, and starts to work normally
according to the working mode combined by M1 and M0;
Therefore, the user needs to wait for the rising edge of AUX as the starting point for the normal operation of the module.
5.6 Detailed explanation of AUX
AUX is used for wireless transceiver buffer indication and self-inspection indication.
It indicates whether the module has data that has not been transmitted through the wireless, or whether the received wireless data
has not been sent through the serial port, or the module is in the process of initializing self-test.
5.6.1 Serial Port Data Output Indication
Used to wake up the external MCU in sleep;

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5.6.2 Wireless Transmission Indication
Empty buffer: the data in the internal 1000-byte buffer is written to the wireless chip (automatic packetization);
When AUX=1, the user continuously initiates data less than 1000 bytes, which will not overflow;
When AUX=0, the buffer is not empty: the data in the internal 1000-byte buffer has not been written into the wireless chip and
the transmission is started. At this time, the module may be waiting for the end of user data to time out, or it is transmitting
wireless packets.
【Note】: When AUX=1, it does not mean that all serial port data of the module has been transmitted wirelessly, or the last
packet of data may be being transmitted.
5.6.3 The module is being configured
Only during reset and when exiting sleep mode;
5.6.4 Precautions
No.
Notes on AUX
1
The above function 1 and function 2, output low level priority, that is: if any output low level condition is met, AUX will
output low level;
When all low-level conditions are not met, AUX outputs high level.
2
When the AUX outputs a low level, it means the module is busy, and the working mode detection will not be performed at
this time;
When the module AUX outputs a high level within 1ms, the mode switching will be completed.

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3
After the user switches to a new working mode, at least 2ms after the rising edge of AUX, the module will actually enter
this mode;
If AUX is always at high level, then the mode switch will take effect immediately.
4
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset the user
parameters, during which AUX outputs low level.
5
Due to the characteristics of the LoRa modulation method, the information transmission delay is much longer than that of
FSK. For example, at an airspeed of 1.2kbps, the transmission delay of 100 bytes is about 1.5 seconds. It is recommended
that customers do not transmit large amounts of data at low airspeeds. , so as to avoid communication anomalies caused by
data loss caused by data accumulation.
Chapter 6 Working Mode
The module has four working modes, which are set by pins M1 and M0; the details are shown in the table below:
Mode（0-3）
M1
M0
Mode Introduction
Remark
0 Transfer Mode
0
0
Serial port open, wireless open, transparent transmission
Support special command
air configuration
1 WOR Mode
0
1
Can be defined as WOR sender and WOR receiver
Support air wake
2 Configuration
Mode
1
0
Users can access the registers through the serial port to control the
working status of the module
3 Deep Sleep
1
1
Module goes to sleep
6.1 Mode Switch
No
Remark
1
The user can combine the high and low levels of M1 and M0 to determine the working mode of the module. 2 GPIOs of
MCU can be used to control mode switching;
After changing M1 and M0: If the module is idle, it can start working in the new mode after 1ms;
If the serial port data of the module has not been transmitted wirelessly, the new working mode can only be entered after
the transmission is completed;
If the module receives the wireless data and sends out the data through the serial port, it needs to send the data before
entering the new working mode;
So the mode switch can only be valid when AUX output 1, otherwise the switch will be delayed.
2
For example: the user continuously inputs a large amount of data and simultaneously performs mode switching. At
this time, the switching mode operation is invalid; the module will process all user data before performing new mode
detection;
Therefore, the general suggestion is: detect the output state of the AUX pin, wait for 2ms after outputting a high level,
and then switch.
3
When the module is switched from other modes to sleep mode, if there is data that has not been processed;
The module will enter the sleep mode only after processing the data (including receiving and sending). This feature can
be used for fast sleep to save power consumption; for example: the transmitter module works in mode 0, the user
initiates serial port data "12345", and then does not have to wait for the AUX pin to be idle (high level), it can directly
switch to sleep mode, And the main MCU of the user will sleep immediately, and the module will automatically enter
the sleep within 1ms after sending all the user data through wireless;
Thereby saving the working time of the MCU and reducing power consumption.

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4
Similarly, this feature can be used for any mode switching. After the module processes the current mode event, it will
automatically enter the new mode within 1ms; thus saving the user from the work of querying AUX and achieving the
purpose of fast switching ;
For example, switch from transmitting mode to receiving mode; the user MCU can also go to sleep in advance before
mode switching, and use the external interrupt function to obtain AUX changes, so as to perform mode switching.
5
This operation mode is very flexible and efficient, and it is completely designed according to the user's MCU operation
convenience, and can reduce the workload of the entire system as much as possible, improve system efficiency, and
reduce power consumption.
6.2 General Mode (Mode 0)
Type
When M0 = 0, M1 = 0, the module works in mode 0
Send
Users can input data through the serial port, and the module will start wireless transmission.
Receive
The wireless receiving function of the module is turned on, and the wireless data will be output through the TXD pin of the
serial port after receiving the wireless data.
6.3 WOR Mode (Mode 1)
Type
When M0 = 1, M1 = 0, the module works in mode 1
Send
When defined as the transmitter, the wake-up code for a certain period of time will be automatically added before the launch
Receive
Data can be received normally, and the receiving function is equivalent to mode 0
6.4 Configuration Mode (Mode 2)
Type
When M0 = 0, M1 = 1, the module works in mode 2
Send
Wireless transmission off
Receive
Wireless reception off
Configuration
User can access registers to configure module operating status

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6.5 Deep Sleep Mode (Mode 3)
Type
When M0 = 1, M1 = 1, the module works in mode 3
Send
Unable to transmit wireless data.
Receive
Unable to receive wireless data.
Notice
When entering other modes from sleep mode, the module will reconfigure the parameters, during the configuration process,
AUX remains low;
Output high level after completion, so it is recommended that users detect the rising edge of AUX.
Chapter 7 Register Read and Write Control
7.1 Command Format
In configuration mode (mode 2: M1=1, M0=0), the list of supported commands is as follows (when setting, only 9600, 8N1 format is
supported):
No.
Command Format
Detailed Description
1
Set Register
Command: C0+start address+length+parameter
Response: C1+start address+length+parameter
Example 1: Configure the channel as 0x09
Command Start Address Length Parameters
Send：C0 05 01 09
Return：C1 05 01 09
Example 2: Simultaneously configure module address (0x1234), network address (0x00), serial
port (9600 8N1), airspeed (1.2K)
Send：C0 00 04 12 34 00 61
Return：C1 00 04 12 34 00 61
2
Read Register
Command: C1+start address+length
Response: C1+start address+length+parameter
Example 1: Reading a channel
Command Start Address Length Parameters
Send：C1 05 01
Return：C1 05 01 09
Example 2: Simultaneously read module address, network address, serial port, and airspeed
Send：C1 00 04
Return：C1 00 04 12 34 00 61
3
Set Temporary
Register
Command: C2 + start address + length + parameters
Response: C1 + start address + length + parameters
Example 1: Configure the channel as 0x09
Command Start Address Length Parameters
Send：C2 05 01 09
Return：C1 05 01 09
Example 2: Simultaneously configure module address (0x1234), network address (0x00), serial
port (9600 8N1), airspeed (1.2K)

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Send：C2 00 04 12 34 00 61
Return：C1 00 04 12 34 00 61
5
Wireless
Configuration
Instructions: CF CF + regular instructions
Response: CF CF + Regular Response
Example 1: The wireless configuration channel is 0x09
Wireless Command Header Command Start Address Length Parameters
Send：CF CF C0 05 01 09
Return：CF CF C1 05 01 09
Example 2: wireless simultaneous configuration module address (0x1234), network address
(0x00), serial port (9600 8N1), airspeed (1.2K)
Send：CF CF C0 00 04 12 34 00 61
Return：CF CF C1 00 04 12 34 00 61
6
Wrong Format
Format error response
FF FF FF
7.2 Register Description
No.
Read and
Write
Name
Description
Remark
00H
read/write
ADDH
ADDH (default 0)
Module address high byte and low byte;
Note: When the module address is equal to FFFF, it
can be used as the broadcast and listening address,
that is, the module will not perform address filtering
at this time
01H
read/write
ADDL
ADDL (default 0)
02H
read/write
NETID
NETID (default 0)
Network address, used to distinguish the network;
When communicating with each other, they should
be set to be the same.
03H
read/write
REG0
7
6
5
UART serial port rate (bps)
For the two modules communicating with each
other, the serial port baud rate can be different, and
the verification method can also be different;
When continuously transmitting large data packets,
users need to consider the data blocking caused by
the same baud rate, and may even be lost;
It is generally recommended that the baud rate of
both communication parties be the same.
0
0
0
Serial port baud rate is 1200
0
0
1
Serial port baud rate is 2400
0
1
0
Serial port baud rate is 4800
0
1
1
Serial port baud rate is 9600
(default)
1
0
0
Serial port baud rate is 19200
1
0
1
Serial port baud rate is 38400
1
1
0
Serial port baud rate is57600
1
1
1
Serial port baud rate is
115200
4
3
serial check digit
The serial port modes of the communication parties
can be different;
0
0
8N1(default)
0
1
8O1
1
0
8E1
1
1
8N1(equal to 00)
2
1
0
Wireless air rate (bps)
The air speed of both communication parties must be
the same;
0
0
0
air speed 0.3k

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The higher the air rate, the smaller the delay and the
shorter the transmission distance.
0
0
1
air speed 1.2k
0
1
0
air speed 2.4k(default)
0
1
1
air speed 4.8k
1
0
0
air speed 9.6k
1
0
1
air speed 19.2k
1
1
0
air speed 38.4k
1
1
1
air speed 62.5k
04H
read/write
REG1
7
6
subcontract settings
The data sent by the user is less than the sub-packet
length, and the serial port output of the receiving end
presents an uninterrupted continuous output;
If the data sent by the user is larger than the length of
the packet, the serial port at the receiving end will
output the packet.
0
0
240 bytes (default)
0
1
128 bytes
1
0
64 bytes
1
1
32 bytes
5
RSSI ambient noise enable
After enabling, the command C0 C1 C2 C3 can be
sent in the transmission mode or WOR transmission
mode to read the register;
Register 0x00: current ambient noise RSSI;
Register 0X01: RSSI when receiving data last time
(the current channel noise is: dBm = -(256 -
RSSI));Instruction format: C0 C1 C2 C3+start
address+read length;
Return: C1 + address + read length + read valid
value; for example: send C0 C1 C2 C3 00 01
Return C1 00 01 RSSI (the address can only start
from 00)
0
disabled (default)
1
enable
4
3
2
reserve
1
0
transmit power
The relationship between power and current is
non-linear, and the power supply efficiency is the
highest at maximum power;
Current does not decrease proportionally with power
reduction.
0
0
30dBm (default)
0
1
27dBm
1
0
24dBm
1
1
21dBm
05H
read/write
REG2
Channel Control (CH)
0-83 represent a total of 84 channels
Actual frequency = 410.125 + CH *1M
06H
read/write
REG3
7
Enable RSSI byte
When enabled, the module receives wireless data
and outputs it through the serial port TXD, followed
by an RSSI strength byte.
0
disabled (default)
1
enable
6
transfer method
During fixed-point transmission, the module will
recognize the first three bytes of serial port data as:
address high + address low + channel, and use it as
the wireless transmission target.
0
transparent transmission (default)
1
Fixed-point transmission
5
relay function
After the relay function is enabled, if the target
address is not the module itself, the module will start
a forwarding;
In order to prevent data return, it is recommended to
use it in conjunction with the fixed-point mode; that
is, the destination address is different from the
source address.
0
Disable relay function (default)
1
Enable relay function
4
LBT enable
After enabled, wireless data will be monitored before
transmission, which can avoid interference to a
certain extent, but may cause data delay;
The maximum stay time of LBT is 2 seconds, and it
will be issued forcibly when it reaches 2 seconds.
0
disabled (default)
1
enable

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3
WOR mode transceiver control
Only valid for mode 1;
1. In the receiving mode of wor, the module can
modify the delay time after wake-up, and the default
time is 0;
2. The receiving end needs to send the command C0
09 02 03 E8 in the configuration mode (C0 is the
write command, 09 is the address of the register
initiator, 02 is the length, 03 E8 is the set delay, the
maximum FFFF is 65535ms, set to 0 turns off the
wakeup delay.)
3. Data can be sent within the delay
0
WOR receiver (default)
Working in WOR monitoring mode, the
monitoring period is shown below (WOR
period), which can save a lot of power
consumption.
1
WOR transmitter
The transceiver of the module is turned on,
and when transmitting data, a wake-up code
for a certain period of time is added.
2
1
0
WOR cycle
Only valid for mode 1;
Period T= (1+WOR)*500ms, maximum 4000ms,
minimum 500ms;
The longer the WOR monitoring interval period, the
lower the average power consumption, but the
greater the data delay;
The sending and receiving parties must be consistent
(very important)
0
0
0
500ms
0
0
1
1000ms
0
1
0
1500ms
0
1
1
2000ms
1
0
0
2500ms
1
0
1
3000ms
1
1
0
3500ms
1
1
1
4000ms
07H
write
CRYPT
_H
key high byte (default 0)
Write only, read returns 0;
Used for encryption to avoid interception of air
wireless data by similar modules;
Inside the module, these two bytes will be used as
calculation factors to transform and encrypt the
wireless signal in the air.
08H
write
CRYPT
_L
Key low byte (default 0)
80H
～
86H
read
PID
Product information 7 bytes
Product information 7 bytes
7.3 Factory default parameters
Model
Factory default parameter values: C0 00 09 00 00 00 62 00 17 03 00 00
Module Model
Frequency
Address
Channel
Air Speed
Baud Rate
Serial Format
Transmit
Power
E22-400T30S
433.125MHz
0x0000
0x17
2.4kbps
9600
8N1
30dbm
Chapter 8 Use of Relay Networking Mode
No.
Description of Relay Mode

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1
After setting the relay mode through the configuration mode, switch to the general mode and the relay starts to work.
2
In repeater mode, ADDH and ADDL are no longer used as module addresses, but are forwarded and paired corresponding to NETID
respectively. If one of the networks is received, it will be forwarded to another network; the network ID of the repeater itself is invalid.
3
In relay mode, the relay module cannot send and receive data, and cannot operate with low power consumption.
4
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset the user parameters, during
which AUX outputs low level.
Relay networking rules description:
1、Forwarding rules, the relay can forward data in both directions between two NETIDs.
2、In relay mode, ADDH\ADDL is no longer used as a module address, but as a NETID forwarding pair.
As shown in the picture:
1First Relay
"Node 1" has a NETID of 08.
"Node 2" has a NETID of 33.
The ADDH\ADDL of trunk 1 are 08 and 33 respectively.
So the signal sent by node 1 (08) can be forwarded to node 2 (33)
At the same time, node 1 and node 2 have the same address, so the data sent by node 1 can be received by node 2.
2Secondary Relay
The ADDH\ADDL of relay 2 are 33 and 05 respectively.
So relay 2 can forward the data of relay 1 to network NETID:05.
Thus node 3 and node 4 can receive node 1 data. Node 4 outputs data normally, and node 3 has a different address from node 1, so no
data is output.
3Two-way Relay
Configuration as shown in the figure: the data sent by node 1 can be received by nodes 2 and 4, and the data sent by nodes 2 and 4 can
also be received by node 1.

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Chapter 9 PC Configuration Instructions
The figure below shows the display interface of the host computer for E22-400T30S configuration. Users can switch to the
command mode through M0 and M1, and quickly configure and read parameters on the host computer.
In configuring the upper computer, the module address, frequency channel, network ID, and key are all in decimal display mode;
the value range of each parameter:
Network address: 0～65535
Frequency channel: 0~83
Network ID: 0~255
Key: 0~65535
When using the host computer to configure the relay mode, the user needs to pay special attention. Since the parameters in the
host computer are in decimal display mode, the module address and network ID need to be converted when filling in;
For example, the network ID input by the transmitter A is 02, and the network ID input by the receiver B is 10, then when the
relay terminal R sets the module address, convert the hexadecimal value 0X020A to the decimal value 522 and fill it in as the
relay terminal R module address;
That is to say, the module address value that the relay terminal R needs to fill in at this time is 522.
Chapter 10 Hardware Design
It is recommended to use a DC regulated power supply to power the module. The ripple coefficient of the power supply should
be as small as possible, and the module must be reliably grounded;
Please pay attention to the correct connection of the positive and negative poles of the power supply, such as reverse connection
may cause permanent damage to the module;
Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the maximum
value, it will cause permanent damage to the module;
Please check the stability of the power supply, the voltage cannot fluctuate greatly and frequently;
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% margin, and having