Ebyte E22-900T30S1C User manual

E22-900T30S1C User Manual
SX1262 868M/915M 1W SMD Wireless Module

CONTENTS
1. OVERVIEW........................................................................................................................................3
1.1 INTRODUCTION............................................................................................................................................................... 4
1.2 FEATURES........................................................................................................................................................................4
1.3 APPLICATION...................................................................................................................................................................5
1.4 FUNCTION INTRODUCTION...............................................................................................................................................5
2. SPECIFICATION AND PARAMETER..............................................................................................6
2.1 LIMIT PARAMETER............................................................................................................................................................ 6
2.2 OPERATING PARAMETER...................................................................................................................................................6
3 SIZE AND PIN DEFINITION............................................................................................................ 8
4. CONNECT TO MCU.........................................................................................................................9
5 FUNCTION DESCRIPTION............................................................................................................ 10
5.1 FIXED TRANSMISSION.....................................................................................................................................................10
5.2 BROADCASTING TRANSMISSION......................................................................................................................................11
5.3 BROADCASTING ADDRESS.............................................................................................................................................. 11
5.4 MONITOR ADDRESS.......................................................................................................................................................11
5.5 RESET........................................................................................................................................................................... 11
5.6 AUX DESCRIPTION........................................................................................................................................................ 12
5.6.1 Indication of UART output
................................................................................................................................
12
5.6.2 Indication of wireless transmitting
...................................................................................................................
12
5.6.3 Configuration procedure of module
................................................................................................................
13
5.6.4 Notes for AUX
....................................................................................................................................................
13
6 OPERATING MODE........................................................................................................................13
6.1 MODE SWITCHING.................................................................................................................... 14
6.2 NORMAL MODE（MODE 0）........................................................................................................................................14
6.3 WOR MODE（MODE 1）............................................................................................................................................ 15
6.4 CONFIGURATION MODE（MODE 2）............................................................................................................................ 15
6.5 DEEP SLEEP MODE（MODE 3）.................................................................................................................................... 15
7 REGISTER READ AND WRITE CONTROL....................................................................................15
7.1 COMMAND FORMAT......................................................................................................................................................15

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7.2 REGISTER DESCRIPTION.................................................................................................................................................. 17
7.3 FACTORY DEFAULT PARAMETER...................................................................................................................................... 19
8 REPEATER NETWORKING MODE................................................................................................19
9 CONFIGURATION INSTRUCTIONS ON COMPUTER................................................................20
10 HARDWARE DESIGN...................................................................................................................21
11 FAQ................................................................................................................................................ 22
11.1 COMMUNICATION RANGE IS TOO SHORT......................................................................................................................22
11.2 MODULE IS EASY TO DAMAGE......................................................................................................................................23
11.3 BER(BIT ERROR RATE)IS HIGH.................................................................................................................................. 23
12 PRODUCTION GUIDANCE......................................................................................................... 23
12.1 REFLOW SOLDERING TEMPERATURE.............................................................................................................................. 23
12.2 REFLOW SOLDERING CURVE......................................................................................................................................... 24
13 E22 SERIES.................................................................................................................................... 24
14 ANTENNA RECOMMENDATION........................................................................................... 25
15 PACKAGE FOR BATCH ORDER.................................................................................................. 26
REVISION HISTORY.......................................................................................................................... 26
ABOUT US.......................................................................................................................................... 26

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3
Disclaimer
EBYTE reserves all rights to this document and the information contained herein.
Products, names, logos and designs described herein may in whole or in part be
subject to intellectual property rights. Reproduction, use, modification or disclosure to
third parties of this document or any part thereof without the express permission of
EBYTE is strictly prohibited.
The information contained herein is provided “as is” and EBYTE assumes no
liability for the use of the information. No warranty, either express or implied, is given,
including but not limited, with respect to the accuracy, correctness, reliability and
fitness for a particular purpose of the information. This document may be revised by
EBYTE at any time. For most recent documents, visit www.ebyte.com.

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1. Overview
1.1 Introduction
E22-900T30S1C is a wireless serial port module (UART) based
on SEMTECH's SX1262 RF chip. It has multiple transmission modes,
LoRa spread spectrum technology, TTL level output, compatible
with 3.3V and 5V IO port voltage.
With PA and LNA, the power is 1W based on originally
imported SX1262 module, the receiving sensitivity is improved
accordingly. LoRa direct sequence spread spectrum technology will
bring longer communication distance, and has the advantages of concentrated power density and strong
anti-interference ability. It is different from FSK and GFSK.
The module has data encryption. Data transmitted over the air, with randomness, makes data interception
meaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces to
provide custom development services.It supports packet length setting and also supports different real-time and
data packet.
1.2 Features
Communication distance tested is up to 10km
Maximum transmission power of 1W, software multi-level adjustable；
Support the global license-free ISM 868/915MHz band；
Support air date rate of 0.3kbps～62.5kbps；
Support new generation LoRa technology based on SX1262；
Support RSSI for evaluating signal quality, improving communication network, and ranging;
Support LBT for monitoring channel environmental noise before sending data, and for improving
communication.
Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption
of software is reduced by 35%;
Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%;
Low power consumption for battery supplied applications；
Support 3.3V~5.5V power supply, power supply over 5.0 V can guarantee the best performance；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
IPEX and stamp hole optional, good for secondary development and integration.

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1.3 Application
Home security alarm and remote keyless entry；
Smart home and industrial sensors；
Wireless alarm security system；
Building automation solutions；
Wireless industrial-grade remote control；
Health care products；
Advanced Meter Reading Architecture(AMI)；
Automotive industry applications.
1.4 Function introduction
LoRa spread spectrum: LoRa direct sequence spread spectrum technology will bring longer communication distance;
low transmit power density, it is not easy to cause interference to other equipment.
High confidentiality, extremely low probability of interception; strong anti-interference ability, strong suppression of
co-channel interference and various noises; excellent anti-multipath fading performance.
LBT: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors the
channel environment noise before transmitting. If the noise exceeds the threshold, it will be sent delayed. This feature can
greatly improve the communication success rate of the module in harsh environments. This function can be used for
network transmission and anti-collision processing.
RSSI: The signal strength indication function. The module supports packet signal strength serial output. Can be used to
assess signal quality, improve communication networks, and ranging. The module supports ambient noise signal strength
serial output. It can be used to implement LBT functions manually.
Wireless configuration: Remotely configure or read wireless module parameters by sending command packets
wirelessly.
Networking function: The module can implement multi-level repeater networking. Multi-level repeater is suitable for
ultra long-distance communication. Multiple networks in the same area can run simultaneously.
Ultra-low power consumption: the air wake-up function. It is especially suitable for battery-powered applications: when
the module is in WOR state, the configuration module WOR monitors the overall power consumption of the adjustable
module. The maximum configurable response delay of the module is 4000ms. The average current of the module in this
mode is about 2uA.
Fixed-point transmission: supports address function, the host can transmit data to any address, any channel, to achieve
networking, repeater and other application. For example: module A transmits data to module B (address is 0x00 01,
channel is 0x80), date is AA BB CC, the communication format is: 00 01 80 AA BB CC, where 00 01 is the module B address
and 80 is the module B channel, then module B can receive the AA BB CC (other modules do not receive data).
Broadcast monitoring: Set the module address to 0xFFFF, which can monitor the data transmission of the module on the
same channel; the transmitted data can be received by the module of any address on the same channel, thus playing the
role of broadcasting and monitoring.

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Forward error correction: The module has FEC forward error correction algorithm, which has high coding efficiency and
strong error correction capability. In the case of sudden interference, it can actively correct the interfered data packets,
greatly improving reliability and transmission distance. When without FEC, such packets can only be discarded.
Deep sleep function: When the module is in sleep mode, mode 3, the wireless receiver is turned off and the
micro-controller is in a sleep state; at this time, the power consumption of the whole device is about 2uA.
Watchdog: The module has a built-in watchdog and performs precise time layout. Once an exception occurs, the
module will restart within 1 second and continue to work according to the previous parameter settings.
Parameter saving: After the user sets the parameters, the module parameters will be saved, the power will not be lost,
and the module will work according to the set parameters after power-on.
Applicable environment: 900MHz is free frequency band, users can use it directly without application; 900MHz features
certain penetration and diffraction ability, suitable for environment with small data volume, long transmission distance
and easy to be interfered.
2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remark
Min.
Max.
Power supply（V）
0
5.5
Voltage over 5.5V will cause permanent
damage to module
Blocking power（dBm）
-
10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
85
/
2.2 Operating parameter
Main parameter
Performance
Remark
Min.
Typ.
Max.
Operating voltage（V）
3.3
5.0
5.5
≥5.0 V ensures output power
Communication level（V）
3.3
For 5V TTL, It is recommended to add
level conversion
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（MHz）
850.125
-
930.125
Support ISM band
Power
consump
tion
TX current（mA）
650
Instant power consumption
RX current（mA）
16
Sleep current （μA）
2
Software is shut down
Max Tx power（dBm）
29.5
30.0
30.5
Receiving sensitivity（dBm）
-147
-148
-149
Air data rate is 2.4kbps
Air data rate（bps）
0.3k
2.4k
62.5k
Controlled via user’s programming

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Main parameter
Description
Remark
Distance for reference
10000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 2.4kbps
TX length
240 Byte
Can be configured via command as 32/64/128/240
bytes per packet to transmit
Buffer
1000 Byte
Modulation
LORA
Communication interface
UART
Package
SMD
Connector
2.54 mm
Size
40.5*25 mm
Antenna
IPEX/stamp hole
50 ohm impedance

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3 Size and pin definition
No.
Name
Direction
Function
1
M0
Input
（weak pull-up）
Work with M1 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
2
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
3
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input. Ground
4
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be
configured as open-drain or push-pull output
5
AUX
Output
To indicate module ’ s working status & wakes up the external MCU.
During the procedure of self-check initialization, the pin outputs low level.
Can be configured as push-pull output (can be suspended).

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6
VCC
Input
Power supply ：3.3~ 5.5V DC
7
GND
Input
Ground
8
NRST
Input
Module reset pin, low reset
9
GND
Input
Ground
10
NC
Input
can be suspended
11
NC
Input
can be suspended
12
NC
Input/output
can be suspended
13
NC
Input/output
can be suspended
14
NC
Input/output
can be suspended
15
GND
Ground
16
GND
Ground
17
GND
Ground
18
ANT
output
High frequency signal output, 50 ohm characteristic impedance
4. Connect to MCU

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No.
Description（STM8L MCU）
1
The UART module is TTL level.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
5 Function description
5.1 Fixed transmission

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5.2 Broadcasting transmission
5.3 Broadcasting address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the
purpose of broadcast is realized.
5.4 Monitor address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of monitor
is realized.
5.5 Reset
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the operating mode
based on user’s parameters. During the process, the AUX remains low level. After the process completed, the AUX outputs high
level and starts to work as per the operating mode combined by M1 and M0. Therefore, users need to wait the AUX rising edge
as the start of module’s normal work.

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5.6 AUX description
AUX Pin can be used as indication for wireless send & receive buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent
through UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART output
To wake up external MCU
5.6.2 Indication of wireless transmitting
Buffer (empty): the internal 1000 bytes data in the buffer are written to the RFIC (Auto sub-packaging). When AUX=1, the
user can input data less than 1000 bytes continuously without overflow. Buffer (not empty): when AUX=0, the internal 1000
bytes data in the buffer have not been written to the RFIC completely. If the user starts to transmit data at this circumstance, it
may cause overtime when the module is waiting for the user data, or transmitting wireless sub package.When AUX = 1, it does
not mean that all the UART data of the module have been transmitted already, perhaps the last packet of data is still in
transmission.

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5.6.3 Configuration procedure of module
Only happened when power-on resetting or exiting sleep mode
5.6.4 Notes for AUX
No.
Description
1
For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means
if it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX
outputs high level.
2
When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since
AUX outputs high level, the mode switch will be completed.
3
After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for 2ms .
If AUX stays on the high level, the operating mode switch can be effected immediately.
4
When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will
reset user parameters, during which AUX outputs low level.
6 Operating mode
There are four operating modes, which are set by M1 and M0, the details are as follows:
Mode(0-3)
M1
M0
Description
Remark
0 Normal mode
0
0
UART and wireless channel are open, transparent
transmission is on
Supports configuration over air via
special command
1 WOR mode
0
1
Can be defined as WOR transmitter and WOR receiver
Supports wake up over air
2 Configuration
mode
1
0
Users can access the register through the serial port to
control the working state of the module
3 Deep sleep mode
1
1
Sleep mode

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6.1 Mode switching
No.
Remark
1
Users can combine M1 and M0 with high and low levels to determine the operating mode. Two GPIOs of the
MCU can be used to control mode switching;
After changing M1 and M0: If the module is idle, after 1ms, it can start working according to the new mode;
If the serial port data of the module has not been transmitted through the wireless, the new working mode can
be switched after the transmission is completed;
If the module receives the wireless data and transmits the data through the serial port, it needs to finish
transmission before switching the new working mode;
Therefore, mode switching can only be valid when AUX output is 1, otherwise it will delay switching.
2
For example, users 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 the user data before performing the
new mode detection;
Therefore, the general recommendation is to detect the output state of the AUX pin and switch after 2ms when
the output is high.
3
When the module is switched from other modes to sleep mode, if the data has not been processed yet;
The module will process these data (including receiving and sending) before entering sleep mode. This feature
can be used for fast sleep, which saves power; for example, the transmitter module works in mode 0, the user
transmits the serial port data "12345", and then does not have to wait for the AUX pin to be idle (high level), and
can directly switch to sleep mode. And the user's main MCU immediately sleeps, the module will automatically
transmit the user data through the wireless, and automatically enters sleep within 1ms;
This saves MCU's working time and reduces power consumption.
4
Similarly, any mode switching can use this feature. After the module processes the current mode event, it will
automatically enter the new mode within 1ms; thus eliminating the need for the user to query AUX and achieve
the purpose of fast switching;
For example, switching from the transmit mode to the receive mode; the user MCU can also enter sleep before
the mode switch, and use the external interrupt function to acquire the AUX change, thereby performing mode
switching.
5
This operation mode is very flexible and efficient, and is designed according to the user's MCU's operation
convenience, and can reduce the workload of the entire system as much as possible, improve system efficiency,
and reduce power consumption.
6.2 Normal mode（Mode 0）
Type
M0 = 0，M1 = 0
Transmitting
Users can input data through the serial port and the module will start wireless transmission.
Receiving
The module wireless receiving function is turned on, and after receiving the wireless data, it will be output through the
serial port TXD pin.

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6.3 WOR mode（Mode 1）
Type
M0 = 1，M1 =0
Transmitting
When defined as a transmitting party, a preamble is automatically added before transmitting.
Receiving
It can receive data normally, the receiving function is the same as mode 0.
6.4 Configuration mode（Mode 2）
Type
M0 = 0，M1 = 1
Transmitting
Wireless transmitting off
Receiving
Wireless receiving off
Configuration
Users can access the registers to configure the module's operation state.
6.5 Deep sleep mode（Mode 3）
Type
M0 = 1，M1 = 1
Transmitting
Unable to transmit wireless data
Receiving
Unable to receive wireless data
Note
When from the sleep mode to other modes, the module will reconfigure the parameters. During the configuration
process, AUX will remain low; After configuration,it outputs high level, we suggest that user test rising edge AUX.
7 Register read and write control
7.1 Command format
In configuration mode (mode 2: M1 = 1, M0 = 0), the list of supported commands are as follows (only 9600, 8N1 format is
supported when)：

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No.
Command format
Description
1
Set register
Command: C0+starting address+length+parameters
Response: C1+starting address+length+parameters
E.g 1: Channel is 0x09
command starting address length parameter
Send: C0 05 01 09
Returen: C1 05 01 09
E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data
rate (1.2K).
Send: C0 00 04 12 34 00 61
Return: C1 00 04 12 34 00 61
2
Read register
Command: C1+starting address+parameters
Response: C1+starting address+length+parameters
E.g 1：Read channel
command starting address length parameter
Send: C1 05 01
Returen: C1 05 01 09
E.g 2: Read module address, network address, serial port and air data rate.
Send: C1 00 04
Return: C1 00 04 12 34 00 61
3
Set temporary
registers
Command: C2+starting address+parameters
Response: C1+starting address+length+parameters
E.g 1: Channel is 0x09
command starting address length parameter
Send: C2 05 01 09
Returen: C1 05 01 09
E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data
rate (1.2K).
Send: C2 00 04 12 34 00 61
Return: C1 00 04 12 34 00 61
5
Wireless
configuration
Command: CF CF + normal command
Respond：CF CF + normal respond
E.g 1: Channel is 0x09
Command head command starting address length parameter
Send: CF CF C0 05 01 09
Returen: CF CF C1 05 01 09
E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data
rate (1.2K).
Send: CF CF C2 00 04 12 34 00 61
Return: CF CF C1 00 04 12 34 00 61
6
Wrong format
Wrong format respond: FF FF FF

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7.2 Register description
Address
Read or
write
Name
Description
Remark
00H
Read/W
rite
ADDH
ADDH（default 0）
The module address is high byte and low byte.
Note: When the module address is FFFF, it can be
used as the broadcast and monitor address, that
is the module will not perform address filtering.
01H
Read/W
rite
ADDL
ADDL（default 0）
02H
Read/W
rite
NETID
NETID（default 0）
Network address, used to distinguish the network.
When communicating with each other, they
should be set to the same.
03H
Read/W
rite
REG0
7，6，5 UART: Serial port rate（bps）
000: 1200
001: 2400
010: 4800
011: 9600（default）
100: 19200
101: 38400
110: 57600
111: 115200
---------------------------------------
4，3： Serial parity bit
00：8N1（default）
01：8O1
10：8E1
11：8N1（equal to 00）
-----------------------------------
2，1，0，air data rate
000: 0.3k
001: 1.2k
010: 2.4k（default）
011: 4.8k
100: 9.6k
101: 19.2k
110: 38.4k
111: 62.5k
For the two modules that communicate with each
other, the serial port baud rate can be different,
and the verification method can also be different.
When transmitting large packets continuously,
users need to consider the data blocking caused
by the same baud rate, and data may even be
lost. It is generally recommended that both
parties have the same baud rate.
---------------------------------------
Both parties must be the same
The higher the rate, the shorter the distance
04H
Read/W
rite
REG1
7，6： Sub packet setting
00: 240 bytes（default）
01: 128 bytes
10: 64 bytes
11: 32 bytes
--------------------------------------
5 ：RSSI Ambient noise enable
1: Enable
0: Disable（default）
--------------------------------------
4，3，2 Reserve
--------------------------------------
1，0： Transmitting power
When the data is smaller than the sub packet
length, the serial output of the receiving end is an
uninterrupted continuous output.
When the data is larger than the sub packet
length, the receiving end serial port will output
the sub packet.
--------------------------------------------
When enabled, the C0 C1 C2 C3 command can be
sent in the transmitting mode or WOR

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00：30dbm（default）
01：27dbm
10：24dbm
11：21dbm
transmitting mode to read the register.
Register 0x00: Current ambient noise rssi
Register 0X01: rssi when the data was received last
time.
（Current channel noise is: dBm = -（256 - RSSI））
Command format: C0 C1 C2 C3 + starting address
+ read length
Returns: C1 + address + read length + read valid value
E.g: send C0 C1 C2 C3 00 01
Return C1 00 01 rssi
（Address can only start from 00）
----------------------------------
Power and current are nonlinear, and power
efficiency is highest at maximum power.
The current does not decrease in proportion to
the decrease in power.
05H
Read/W
rite
REG2
Channel control（CH）
0-80 represents a total of 81 channels
Frequency= 850.125 + CH *1M
06H
Read/W
rite
REG3
7 Enable RSSI
1：Enable
0：Disable（default）
--------------------------------------
6， Fixed point transmission
1：Fixed point transmission mode
0 ： Transparent transmission mode
（default）
---------------------------------------
5 Enable reply
1：Enable repeater function
0：Disable repeater function
--------------------------------------
4 LBT enable byte (monitor before
transmission)
1：Enable
0：Disable（default）
--------------------------------------
3 WOR transceiver control
1：WOR transmitter
The module receiving and
transmitting functions are turned on, and a
wake-up code is added when transmitting
data. Receiving is turned on.
0：WOR receiver（default）
The module is unable to transmit
data and works in WOR monitoring mode. The
monitoring period is as follows (WOR cycle),
which can save a lot of power.
---------------------------------------
2，1，0，WOR cycle
000：500ms
When enabled, the module receives wireless data
and it will follow an RSSI strength byte after
output via the serial port TXD
.---------------------------------------
The module recognizes the first three bytes of the
serial data as: address high + address low +
channel and takes it as the wireless transmitting
target.
---------------------------------------
After the reply function is enabled, if the target
address is not the module itself, the module will
forward it once.
In order to prevent data return-back, it is
recommended to use it in conjunction with the
fixed point mode. That is: the target address is
different from the source address.
----------------------------------------
When enabled, wireless data will be monitored
before it is transmitted, which can avoid
interference to a certain extent, but may cause
data delay.
----------------------------------------
Valid only for mode 1.
After the WOR receiver receives the wireless data
and outputs it through the serial port, it will wait
for 1000ms before entering the WOR again. Users
can input the serial port data and return it via the
wireless during this period. Each serial byte will be
refreshed for 1000ms. Users must transmit the
first byte within 1000ms.
---------------------------------------------
Valid only for mode 1.
Period T = (1 + WOR) * 500ms, maximum

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30S1C User manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
19
001：1000ms
010：1500ms
011：2000ms（default）
100：2500ms
101：3000ms
110：3500ms
111：4000ms
4000ms, minimum 500ms
The longer the WOR monitoring interval period,
the lower the average power consumption, but
the greater the data delay
Both the transmitter and the receiver must be the
same (very important).
07H
Write
CRYPT_H
Key high byte (default 0）
Write only, read returns 0
Used for user encryption to avoid intercepting
airborne wireless data by similar modules.
The module will internally use these two bytes as
a calculation factor to transform and encrypt the
over-the-air wireless signal.
08H
Write
CRYPT_L
Key low byte (default 0)
80H~
86H
Read
only
PID
Product information 7 bytes
Product information 7 bytes
7.3 Factory default parameter
Factory default parameters：C0 00 00 62 00 12
Model No.
Frequency
Address
Channel
Air data rate
Baud rate
Parity format
Power
E22-900T30S1C
900.125MHz
0x0000
0x12
2.4kbps
9600
8N1
30dbm
8 Repeater networking mode
No.
Description
1
After setting the repeater mode by configuration, switch to the normal mode and the repeater starts working.
2
In the repeater mode, ADDH, ADDL are no longer used as the module address, but is correspondingly paired with the
NETID. If the data of one of the networks is received, it is forwarded to another network. The network ID of the repeater
itself is invalid.
3
In repeater mode, the repeater module cannot transmit and receive data, and cannot perform low-power operation.
4
The user enters the other mode from mode 3 (sleep mode) or during the reset process, the module resets the user
parameters during which the AUX outputs low level.
Repeater networking rules:
1. Forwarding rules, the repeater can forward data in both directions between two NETIDs.
2. In repeater mode, ADDH\ADDL is no longer used as the module address, and it is used as a NETID forwarding pairing flag.
Figure:
1Primary repeater