Ebyte E62-433T20S User manual

E62-433T20S User Manual
433MHz 100mW Wireless Module

Chengdu Ebyte Electronic Technology Co,;Ltd E62-433T20S user manual
Copyright ©2012–2019，Chengdu EbyteElectronic Technology Co,;Ltd 1
目录
1. OVERVIEW ..................................................................................................................................3
1.1 INT RODUCTION................................................................................................................................................................................3
1.2 FEAT URES.........................................................................................................................................................................................3
2. SPECIFICATION AND PARAMETER .....................................................................................4
2.1 LIMIT PARAMETER..........................................................................................................................................................................4
2.2 OPERATING PARAMETER................................................................................................................................................................4
3 SIZE AND PIN DEFINITION .........................................................................................................5
4 CONNECT TO MCU .......................................................................................................................6
5 FUNCTION DESCRIPTION ..........................................................................................................7
5.1 RESET ............................................................................................................................................7
5.2.1 Indication of UART output ...................................................................................................................................................7
5.2.2 Indication of wireless transmitting .....................................................................................................................................7
5.2.3 Configuration procedure of module ....................................................................................................................................8
5.6.4 Notes for AUX .........................................................................................................................................................................8
6.OPERATING MODE .......................................................................................................................9
6.2 TRANSMISSION MODE (MODE 0) ............................................................................................................................................... 10
6.3.CONFIGURE MODE (MODE 1)..................................................................................................................................................... 10
7.INSTRUCTION FORMAT........................................................................................................... 10
7.1 DEFAULT PARAMETER.................................................................................................................................................................. 11
7.2 READING OPERATING PARAMETERS........................................................................................................................................... 11
7.3 READING VERSION NUMBER....................................................................................................................................................... 11
7.4 PARAMETER SETTING INST RUCTION.......................................................................................................................................... 11
8. HARDWARE DESIGN................................................................................................................ 14
9 FAQ................................................................................................................................................. 15
9.1 COMMUNICATION RANGE IS TOO SHORT................................................................................................................................... 15
9.2 MODULE IS EASY TO DAMAGE.................................................................................................................................................... 15

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9.3 BER(BIT ERROR RAT E) IS HIGH................................................................................................................................................. 15
10 PRODUCTION GUIDANCE ..................................................................................................... 15
11 E62 SERIES .................................................................................................................................. 16
12 ANTENNA RECOMMENDATION .......................................................................................... 16
13.PACKAGE FOR BATCH ORDER ............................................................................................ 17
REVISION HISTORY...................................................................................................................... 18
ABOUT US ........................................................................................................................................ 18

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1. Overview
1.1 Introduction
E62-433T20S is a full-duplex wireless transceiver module
with TTL level output, operates at 425-450MHz (default:
433MHz), transparent transmission is available. Module features
FHSS (Frequency-Hopping Spread Spectrum). During the
transmitting procedure, both sides will perform frequency-
hopping operation automatically in at most 52 channels on the
basis of frequency-hopping logic (the number of FHSS channel
and sequence are configurable.), which greatly improves the anti-
interference performance. The 433M frequency hopping technology is in the front row of this industry.
Module features TDD (Time Division Duplex). User can transmit data while receiving, not ha ve to wait for the end
of receiving. The module can transmit data continuously with some particular combination of air data rate (like air data
rate is 64k, 9600bsp) and baud rate. Under this circumstance, there is no limitation for the size of the data us er can transmit
in one transmission operation and it achieve a very low latency communication link.
The module features FEC (Forward Error Correction) algorithm, which ensure its high coding efficiency & good
correction performance. In the case of sudden interference, it can correct the interfered data packets proactively, so that the
reliability & transmission range are improved correspondingly. But without FEC, those data packets can only be dropped.
1.2 Features
Communication distance tested is up to 1km
Maximum transmission power of 100mW, software multi-level adjustable；
Support the global license-free ISM 433MHz band；
Support air date rate of 16kbps～128kbps；
Support advanced FHSS frequency hopping, improve anti-interference performance.
Based on TDD, time division full duplex bidirectional pass-through can be realized.
Low power consumption for battery supplied applications ；
Support 3.3V~5.2V power supply, power supply over 5.0V can guarantee the best performance ；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
IPEX/external/spring, user can choose accordingly.
1.3 Application
Home security alarm and remote keyless entry；
Smart home and industrial sensors ；
Wireless alarm security system；
Building automation solutions；

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Wireless industrial-grade remote control；
Health care products；
Advanced Meter Reading Architecture(AMI)；
Automotive industry applications.
2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remarks
Min.
Max.
Power supply（V）
0
5.2
Voltage over 5.2V 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
5.2
≥5.0 V ensures output power
Communication level（V）
-
3.3
-
For 5V TTL, it may be at risk of
burning down
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（MHz）
425
-
450.5
Support ISM band
Power
consumption
Transmitting current [mA]
-
102
-
Instant powerconsumption
Receiving current [mA]
-
34
-
-
Turn-off current [μA]
-
4
-
Software is shut down
Max Tx power（dBm）
19.6
20.0
21.4
-
Receiving sensitivity（dBm）
-105
-106
-107
Air data rate is 64kbps
Air data rate（bps）
16k
64k
128k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
1000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 64kbps
TX length
1024 Byte
Internal automatic time division logic subcontracting
Buffer
2048 Byte
Internal Buffer

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Modulation
GFSK
-
Communication interface
UART
-
Package
DIP
-
Connector
2.00mm
-
Size
17*30mm
-
Antenna
IPEX/EXTERNAL/SPRING
50 ohm impedance
3 Size and pin definition
No.
Name
Direction
Function
1
M0
Input
（weak pull-up）
Work with M 1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).

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2
LOCK
Input
Module synchronization indication: high level indicates that both sides of
communication have been synchronized, and data transmission can be
carried out; low level indicates that both sides have not been
synchronized, at which time data transmission will lead to data loss
3
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can
be configured as open-drain or pull-up input.
4
TXD
Output
TTL UART outputs, connects to external RXD (M CU, 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 M CU.
During the procedure of self-check initialization, the pin outputs low
level. Can be configured as push-pull output (suspending is allowed).
6
VCC
Input
Power supply ：2.1~ 5.5V DC
7
GND
Input
Ground
8
ANT
Output
Antenna interface (hf signal output pin)
9
GND
Output/Input
Antenna interface (high frequency signal reference ground)
10
GND
Output
Ground
11
GND
Output
Ground
4 Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level., please collect with M CU.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

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5 Function description
5.1 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.
5.2 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.
5.2.1 Indication of UART output
To wake up external MCU
5.2.2 Indication of wireless transmitting
Buffer (empty): the internal 256 bytes data in the buffer are written to the RFIC (Auto sub -packaging).
When AUX=1, the user can input data less than 256 bytes continuously without overflow. Buffer (not empty): when
AUX=0, the internal 256 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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5.2.3 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 affected 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.

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5.7 LOCK description
6.Operating mode
Contents in below table are the introduction of input status of M1 & M0 and their corresponding mode:•
Mode(0-3)
M1
M0
Mode introduction
Remark
Mode 0
Transmittin
g
0
0
UART and wireless channel are open,
transparent transmission is on.
Both side must be in module 0 when transmitting.
Mode 1
configuratio
n
0
1
Serial port at fixed 9600bps baud rate,
wireless off, configurable parameters
-See detailed explanation of working parameters
6.1 Mode switch
No.
Remarks
1
The user can decide the operating mode by the combination of M 1 and M0. The two GPIO of M CU can be used to
switch mode. After modifying M1 or M 0, it will start to work in new mode 1 ms later if the module is free. If there are
any serial data that are yet to finish wireless transmitting, it will start to work in new mode after the UART transmitting
finished. After the module receives the wireless data & transmits the data through serial port, it will start to work in new
mode after the transmitting finished. Therefore, the mode-switch is only valid when AUX outputs 1, otherwise it will
delay.
2
For example, in mode 0 or mode 1, if the user inputs massive data consecutively and switches operating mode at the
same time, the mode-switch operation is invalid. New mode checking can only be started after all the user’s data process
completed. It is recommended to check AUX pinout status and wait 2ms after AUX outputs high level before switching
the mode.
3
If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the remained
data process completed. The feature can be used to save power consumption. For example, when the transmitter works in
mode 0, after the external M CU transmits data “12345”, it can switch to sleep mode immediately without waiting the
rising edge of the AUX pin, also the user’s main M CU will go dormancy immediately. Then the module will transmit all
the data through wireless transmission & go dormancy 1ms later automatically, which reduces MCU working time &
save power.
4
Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms after
1
Due to the characteristics of TDD and frequency modulation spread spectrum, the module can operate at the same time.
2
Lock is used to indicate the synchronization situation for both side (transmitter and receiver). When lock is high level,
synchronization completed, communication is available. Otherwise when lock is low level, synchronization completed,
communication is unavailable (data lost).

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completing present mode task, which enables the user to omit the procedure of AUX inquiry and switch mode swiftly.
For example, when switching from transmitting mode to receiving mode, the user M CU can go dormancy before
mode-switch, using external interrupt function to get AUX change so that the mode-switch can be realized.
5
This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at the
same time the work load and power consumption of the whole system has been reduced and the efficiency of whole
system is largely improved.
6.2 Transmission mode (Mode 0)
6.3.Configure mode (Mode 1)
7.Instruction format
In command mode（mode 2：M1=1, M0=0）, it supports below instructions on list.
Only support 9600 and 8N1 format when setting
No.
Instruction format
Illustration
1
C0 + working parameters
C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must
be send in succession.
( Save the parameters when power-down )
2
C1 C1 C1
Three C1 are sent in hexadecimal format. The module returns the saved parameters and
must be send in succession.
3
C2 + working parameters
C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must
be send in succession. ( Do not save the parameters when power-down )
Type
When M0 = 0, module works in mode 0
Ordinary
transmitting
operation
User can transmit the data when the modules are synced (PINLOCK = 1(high level)).
Benefit of the TDD feature, user can perform transmitting while receiving. The maximum
size of the data which can be transmit at one time is 2048 Bytes. After the AUX has
turned to 0(low-level), User can perform another 2048 Bytes transmitting operation. The
TDD feature is available whatever the air data rate or the baud rate is.
Continuous
transmitting
operation
The module can transmit data continuously with some particular combination of air data
rate and baud rate, which has been show below.
Air Data Rate = 16Kbps, Baud rate <= 2400bps;
Air Data Rate = 32Kbps, Baud rate <= 4800bps;
Air Data Rate = 64Kbps, Baud rate <= 9600bps;
Air Data Rate = 128Kbps, Baud rate <= 19200bps;
Notes: Although higher air data rate brings lower transmission delay and it allows user
transmits the data continuously at higher baud rate, the communication range will be
shorter.
Type
When M0 = 1, module works in mode 1.
Transmitting
N/A. User can configure the module at baud rate = 9600bps, parity = 8N1.
Receiving
N/A. User can configure the module at baud rate = 9600bps, parity = 8N1.

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4
C3 C3 C3
Three C3 are sent in hexadecimal format. The module returns the version information and
they must be send in succession.
5
C4 C4 C4
Three C4 are sent in hexadecimal format. The module will reset one time and they must be
send in succession.
6
C5+C5+C5
Three C5 are sent in hexadecimal format. The module returns the current RSSI signal
strength value
7.1 Default parameter
Default parameter values：C0 01 0A 1A 0A 44
Model
Frequency
Address
Channel
launch mode
Baud rate
Parity
Transmitting power
E62-433T20S
425-
450.5MHz
1
10
64kbps
9600
8N1
100mW
7.2 Reading operating parameters
Instruction format
Description
C1+C1+C1
In parameter setting mode（M0=1），
User gives the module instruction (HEX format): C1 C1 C1,
Module returns the present configuration parameters.
For example, C0 01 0A 1A 0A 44.
7.3 Reading version number
Instruction format
Description
C3+C3+C3
In command mode（M 0=0，M1=1）,
User gives the module instruction (HEX format): C3 C3 C3,
Module returns its present version number, for example C3 62 xx yy.
62 here means the module model (E62 series); xx is the version number and yy refers to the other
module features.
7.4 Parameter setting instruction
C0 and C2 are operating parameters. The difference between C0 command and C2 command is that C0 command will
write parameters into the internal flash memory and can be saved when power-down, while C2 command cannot be saved
when power-down, because C2 command is temporarily mend instruction. C2 is recommended for the occasion that need
to change the operating parameters frequently, such as C2 01 0A 1A 0A 44
No.
Item
Description
Notes
0
HEAD
Fix 0xC0 or 0xC2, it means this frame data
is control command
Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when power-down

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1
ID
Frequency-hopping sequence ID
（default 01H）
Frequency-hopping sequence is decided by frequency -
hopping ID, both sides must keep the same.
2
FHSS
nums
The quantity of frequency hopping channel
(default 0AH)
Both sides must keep the same. The more quantity of
frequency-hopping channel, the better anti-interference
while synchronization time is longer for both sides.
Otherwise the less quantity of frequency-hopping channel,
the worse anti-interference while synchronization time is
shorter.
3
SPED
Rate parameter, including UART baud rate
and air data rate
7, 6 UART parity bit
00：8N1（default）
01：8O1
10：8E1
11：8N1（equal to 00）
-----------------------------------------
5, 4, 3 TTL UART baud rate（bps）
000：1200bps
001：2400bps
010：4800bps
011：9600bps（default）
100：19200bps
101：38400bps
110：57600bps
111：115200bps
-----------------------------------------
2, N/A
-----------------------------------------
1, 0 Air data rate（bps）
00：16Kbps
01：32Kbps
UART mode can be different between communication
parties
-----------------------------------------------
UART baud rate can be different between communication
parties
The UART baud rate has nothing to do with wireless
transmission parameters & won’t affect the wireless
transmit / receive features.
----------------------------------------------
0 is recommended.
----------------------------------------------
The lower the air data rate, the longer the transmitting
distance, better anti-interference performance and longer
transmitting time
The air data rate must keep the same for both

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10：64Kbps（default）
11：128Kbps
communication parties.
4
CHAN
Communication frequency
(425M+CHAN*0.5M)
default 0AH
00H- 33H，for 425 – 450.5MHz
When the frequency-hopping quantity sets as 1, the module
works only at the fixed frequency (425M + CHAN *
0.5M). Otherwise the module works at a band
(425MHz+CHAN*0.5MHz+FHSS_nums*0.5M Hz).
5
OPTIO
N
7, 0 is recommended.
-----------------------------------------
6 IO drive mode (default 1)
1：TXD and AUX push-pull outputs,
RXD pull-up inputs
0：TXD、AUX open-collector outputs,
RXD open-collector inputs
----------------------------------------
5, 4, 3, 0 is recommended.
-----------------------------------------
2 FEC switch
0：Turn off FEC
1：Turn on FEC（Default）
-----------------------------------------
1, 0 transmission power (approximation)
00： 20dBm（Default）
01： 17dBm
10： 13dBm
11： 10dBm
-----------------------------------------------
This bit is used to the module internal pull-up resistor. It
also increases the level’s adaptability in case of open drain.
But in some cases, it may need external pull-up resistor.
-----------------------------------------------
0 is recommended.
-----------------------------------------------
After turn off FEC, the actual data transmission rate
increases while anti-interference ability decreases. Also,
the transmission distance is relatively short.
Both communication parties must keep on the same pages
about turn-on or turn-off FEC.
-----------------------------------------------
The external power must make sure the ability of current
output more than 300mA and ensure the power supply
ripple within 100mV.
Low power transmission is not recommended due to its low
power supply efficiency.
For example: The meaning of No.3 "S PED" byte ：
The binary bit of the byte
7
6
5
4
3
2
1
0
The specific value
(user configures)
0
0
0
1
1
0
1
0

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Meaning
UART parity bit
8N1
UART baud rate is 9600
Air data rate is 64k
Corresponding hexadecimal
1
A
8. Hardware design
It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and
the module needs to be reliably grounded.；
Please pay attention to the correct connection of the positive and negative poles of the power supply. Reverse
connection may cause permanent damage to the module；
Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the
maximu m value the module will be permanently damaged；
Please check the stability of the power supply, the voltage can not be fluctuated frequently ；
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
margin, so the whole machine is beneficial for long-term stable operation.；
The module should be as far away as possible from the power supply, transformers, high -frequency wiring and other
parts with large electromagnetic interference.；
High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the module.
If it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the copper is
spread on the Top Layer of the module contact part(well grounded), it must be close to the digital part of the module
and routed in the Bottom Layer；
Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer
or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees；
It is assumed that there are devices with large electromagnetic interference around the module that will greatly affe ct
the performance. It is recommended to keep them away from the module according to the strength of the interference.
If necessary, appropriate isolation and shielding can be done；
Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog,
power traces) around the module that will greatly affect the performance of the module. It is recommended to stay
away from the module according to the strength of the interference. If necessary, appropriate isolation and shielding
can be done.
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
still a risk of damage)；
Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；
The mounting structure of antenna has a great influence on the performance of the module. It is necessary to ens ure
that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good
antenna extension cable to extend the antenna to the outside；
The antenna must not be installed inside the metal case, which will cause th e transmission distance to be greatly
weakened.

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9 FAQ
9.1 Communication range is too short
The communication distance will be affected when obstacle exists.
Data lose rate will be affected by temperature, humidity and co -channel interference.
The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground .
Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
The signal will be affected when the antenna is near metal object or put in a metal case.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
The power supply low voltage under room temperature is lower than 2.5V, th e lower the voltage, the lower the
transmitting power.
Due to antenna quality or poor matching between antenna and module.
9.2 Module is easy to damage
Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.
Please check the stability of power source, the voltage cannot fluctuate too much.
Please make sure antistatic measure are taken when installing and using, high frequency devices have electrosta tic
susceptibility.
Please ensure the humidity is within limited range, some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
9.3 BER(Bit Error Rate) is high
There are co-channel signal interference nearby, please be away from interference sources or modify frequency and
channel to avoid interference;
Poor power supply may cause messy code. Make sure that the power supply is reliable.
The extension line and feeder quality are poor or too long, so the bit error rate is high;
10 Production guidance
This type is DIP module, when the welder welds the module, he must be welding according to the anti-static regulation.
This product is allergic to static, randomly welding the module will have the chance of damaging it permanently.

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11 E62 series
Model No.
Core
IC
Frequency
Hz
Tx power
dBm
Distance
km
Data Rate
Package
Size
mm
Interface
E62-433T20S
-
433M
20
1
16k~128k
SMD
17 * 30
IPEX/external/spring
E62-433T30D
-
433M
30
3
16k~128k
DIP
37 * 60
SMA-K
E62-433T20D
-
433M
20
1
16k~128k
DIP
21 * 36
SMA-K
12 Antenna recommendation
The antenna is an important role in the communication process. A good antenna can largely improve the
communication system. Therefore, we recommend some antennas for wireless modules with excellent performance and
reasonable price.
Model No.
Type
Frequency
Hz
Interface
Gain
dBi
Height
Cable
Function feature
TX433-NP-4310
Soft PCB
antenna
433M
SMA-J
2
43.8*9.
5mm
-
Built-in flexibility,FPC soft
antenna
TX433-JW-5
Rubber
antenna
433M
SMA-J
2
50mm
-
Flexible &omnidirectional
TX433-JWG-7
Rubber
antenna
433M
SMA-J
2.5
75mm
-
Flexible &omnidirectional
TX433-JK-20
Rubber
antenna
433M
SMA-J
3
210mm
-
Flexible &omnidirectional
TX433-JK-11
Rubber
antenna
433M
SMA-J
2.5
110mm
-
Flexible &omnidirectional
TX433-XP-200
Sucker
antenna
433M
SMA-J
4
19cm
200cm
Sucker antenna, High gain
TX433-XP-100
Sucker
antenna
433M
SMA-J
3.5
18.5cm
100cm
Sucker antenna, High gain
TX433-XPH-300
Sucker
antenna
433M
SMA-J
6
96.5cm
300cm
Car carrying Sucker antenna,
High gain
TX433-JZG-6
Rubber
antenna
433M
SMA-J
2.5
52mm
-
Short straight
&omnidirectional
TX433-JZ-5
Rubber
antenna
433M
SMA-J
2
52mm
-
Short straight
&omnidirectional
TX490-XP-100
Sucker
antenna
490M
SMA-J
50
12cm
100cm
Sucker antenna, High gain
TX490-JZ-5
Rubber
antenna
490M
SMA-J
50
50mm
-
Short straight
&omnidirectional

Chengdu Ebyte Electronic Technology Co,;Ltd E62-433T20S user manual
Copyright ©2012–2019，Chengdu EbyteElectronic Technology Co,;Ltd 17
13.Package for batch order

Chengdu Ebyte Electronic Technology Co,;Ltd E62-433T20S user manual
Copyright ©2012–2019，Chengdu EbyteElectronic Technology Co,;Ltd 18
Revision history
version
Date
Description
Issued by
1.00
2017/12/13
Initial version
huaa
1.10
2018/01/30
module name change
huaa
1.20
2018/10/25
version updating
huaa
About us
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