Ebyte E95-DTU User manual

E95/E96-DTU(433Lxxx)

Chengdu Ebyte Electronic Technology Co.,Ltd E95/E96-DTU(433Lxxx)User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd
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Contents
Disclaimer and Copyright Notice...................................................................................................................................3
1. Introduction.................................................................................................................................................................1
1.1 Brief Introduction............................................................................................................................................. 1
1.2 Features.............................................................................................................................................................1
1.3 Quick Star......................................................................................................................................................... 2
1.4 Parts Description...............................................................................................................................................4
1.4.1 RS485 Interface.................................................................................................................................. 4
1.4.2 RS232 Interface...................................................................................................................................5
1.5 Size....................................................................................................................................................................6
2. Interface Description.................................................................................................................................................. 6
2.1 Power interface description.............................................................................................................................. 6
2.2 Communication interface description.............................................................................................................. 6
3. Technical Index...........................................................................................................................................................7
3.1 Model specifications.........................................................................................................................................7
3.2 General specifications.......................................................................................................................................9
3.3 Frequency range and channel number..............................................................................................................9
3.4 Transmit power level..................................................................................................................................... 9
3.5 Air speed class.................................................................................................................................................. 9
3.6 Current parameter........................................................................................................................................... 10
3.7 Sending and receiving length and sub-packing method.................................................................................10
4. Function Details........................................................................................................................................................11
4.1 Point-to-Point transmission (hexadecimal).................................................................................................... 11
4.2 Broadcast transmission (hexadecimal)...........................................................................................................11
4.3 Broadcast address........................................................................................................................................... 12
4.4 Listening address............................................................................................................................................ 12
5. Operating Mode........................................................................................................................................................ 12
5.1 Transparent transmission mode (mode 0)...................................................................................................... 12
5.2 WOR mode (mode 1)..................................................................................................................................... 13
5.3 Power Saving mode (mode 2)........................................................................................................................ 13
5.4 Configuration mode (mode 3)........................................................................................................................ 13
6. PC Configuration Instruction....................................................................................................................................14
7. Program the DTU..................................................................................................................................................... 14
8. Connection Diagram in Test and Practical Application........................................................................................... 15
9. Related Products....................................................................................................................................................... 15
10. Precautions for Use.................................................................................................................................................16
Important Statement......................................................................................................................................................17
Revision History........................................................................................................................................................... 17
About us........................................................................................................................................................................17

Chengdu Ebyte Electronic Technology Co.,Ltd E95/E96-DTU(433Lxxx)User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd
Disclaimer and Copyright Notice
The information in this article, including the URL address for reference, is subject to change
without notice. The document is provided "as is" without any guarantee responsibility, including any
guarantee for merchantability, suitability for a specific purpose, or non-infringement, and any
guarantee mentioned elsewhere in any proposal, specification or sample. This document does not
take any responsibility, including the responsibility for infringement of any patent rights caused by
the use of the information in this document. This document does not grant any license for the use of
intellectual property rights in estoppel or other ways, whether express or implied.
The test data obtained in the article are all obtained by the Ebyte laboratory, and the actual
results may vary slightly.
All brand names, trademarks and registered trademarks mentioned in this article are the
property of their respective owners, and it is hereby declared.
The final interpretation right belongs to Chengdu Ebyte Electronic Technology Co., Ltd.
Note: The content of this manual may be changed due to product version upgrades or other reasons. 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. However, Chengdu
Ebyte Electronic Technology Co., Ltd. does not guarantee that the contents of the manual are completely free of errors. All statements
in this manual , Information and suggestions do not constitute any express or implied guarantee.

Chengdu Ebyte Electronic Technology Co.,Ltd E95/E96-DTU(433Lxxx)User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd
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1. Introduction
1.1 Brief Introduction
E95/E96-DTU(433Lxxx) is a wireless data transmission DTU that uses military-grade LoRa modulation technology.
It has a variety of transmission methods. It works at (410/441M) frequency band (default 433MHz). The DTU provides a
transparent RS232/RS485 interface, plastic shell. rail type installation structure, support 8～28V（DC）/85～265V（AC）
voltage input. LoRa spread spectrum technology will bring a longer communication distance and has the advantage of
strong anti-interference ability.
As a communication medium, wireless data transmission station has a certain scope of application like optical fiber,
microwave and open wire: it provides real-time and reliable data transmission of monitoring signals in private networks
under certain special conditions, with low cost, installation and maintenance Convenience, strong diffraction ability,
flexible network structure, and long coverage, suitable for many and scattered locations, complex geographical
environment and other occasions, can be connected with PLC, RTU, rain gauge, level gauge and other data terminals.
1.2 Features
★Adopt military-grade LoRa modulation technology, with data encryption, and the packet length can be set;
Adopt flame-retardant plastic shell, guide rail type installation structure, convenient and efficient installation;
Hidden buttons are used to switch working modes to avoid false triggers, and the equipment is more reliable in
operation;
Simple high-efficiency power supply design, support power supply configuration or line pressure mode, support
8-28V(DC)/85-265V (AC) power supply;
The transmit power can reach up to 20/30dBm, and supports multi-level adjustment. All technical indicators meet
European industrial standards;
Support Modbus protocol transmission;
★Support wireless sending of command data packets, remote configuration or reading of DTU parameters;
Support communication key function, effectively prevent data from being intercepted;
Working temperature range: -40℃～+85℃, adapt to various harsh working environments;
Multiple protection functions such as power pulse protection, reverse connection protection, and antenna surge
protection increase the reliability of the DTU;
The communication port and power interface adopt isolation and high protection;
Powerful software function, all parameters can be set by programming: such as power, frequency, air rate, address
ID, etc.;
Built-in watchdog and precise time layout. Once an abnormality occurs, the DTU will automatically restart and
continue to work according to the previous parameter settings.

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1.3 Quick Star
wo E95/E96-DTU(433Lxxx)
2First install the antenna for the digital DTU, and then install the power supply. The user selects the power adapter for
power supply according to the needs.

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3Use USB to RS485/RS232 or other methods to connect the computer to the digital DTU.
4Start two serial port debugging assistants, select the serial port baud rate to be 9600bps (default), and the check method to
be 8N1 to make serial port transparent transmission.
5If the customer needs to switch the working mode, it can be controlled by the Mode button to switch between different
working modes (M0 indicator, M1 indicator). Hold and press the Mode button for 1 second and release it to switch the
mode once. The mode switching details are shown in the table below:
No.
Type
M1
M0
Description
Mode 0
Transparent
Transmission
Mode
Light
Off
Light
Off
Serial port open, wireless open, transparent transmission
(factory default mode)

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Mode 1
WOR Mode
Light
Off
Light
On
WOR transmission mode, data packet comes with wake-up code
Mode 2
Power Saving
Mode
Light
On
Light
Off
WOR receiving mode, saving its own receiving power
consumption, this mode cannot transmit
Mode 3
Configuration
Mode
Light
On
Light
On
The DTU can be programmed using the configuration software
Note: The DTU has a power-down save mode function (the factory default setting is transparent transmission mode), the
user needs to switch the corresponding mode according to the M1 and M0 indicators (effective immediately).
1.4 Parts Description
1.4.1 RS485 Interface
No.
Name
Function
Description
1
Mode
Mode switch button
Working mode switching control
2
ANT
RF interface
SMA-K, external thread inner hole
3
DC
Power connector
DC power input port, pressure line port
4
RS485
RS485
communication port
Standard RS485 interface
5
PWR
Power Indicator
Lights up when the power is on

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6
TXD
Send indicator
Flashes when sending data
7
RXD
Receive indicator
Flashes when receiving data
8
MO
Mode indicator
Working mode indicator
9
M1
Mode indicator
Working mode indicator
1.4.2 RS232 Interface
No.
Name
Function
Description
1
Mode
Mode switch button
Working mode switching control
2
ANT
RF interface
SMA-K, external thread inner hole
3
DC
Power connector
DC power input port, pressure line port
4
RS232
RS232
communication port
Standard RS232 interface
5
PWR
Power Indicator
Lights up when the power is on
6
TXD
Send indicator
Flashes when sending data
7
RXD
Receive indicator
Flashes when receiving data
8
MO
Mode indicator
Working mode indicator
9
M1
Mode indicator
Working mode indicator

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1.5 Size
2. Interface Description
2.1 Power interface description
E95/E96-DTU(433Lxxx) can be powered by 8～28V（DC）/85～265V（AC）power supply, The wiring port is connected by a
wiring terminal (2 Pin).
2.2 Communication interface description
E95-DTU can be connected to the equipment through RS-485 using terminal blocks.

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No.
Standard
definition
Function
Description
1
G
Signal ground
Anti-interference, grounding
2
A
RS485 bus A interface
RS485 interface A interface is connected to device
A interface
3
B
RS485 bus B interface
RS485 interface B interface is connected to device
B interface
4
TX
RS232 bus TX interface
RS232 interface TX interface is connected to the
RX interface of the device
5
RX
RS232 bus RX interface
RS232 interface RX interface is connected to the
TX interface of the device
★Note: When the radio is connected to multiple devices, the communication is not smooth, but there is no such
phenomenon in a single device. Please try to connect a 120Ω resistor in parallel between the 485_A terminal and the
485_B terminal.
3. Technical Index
3.1 Model specifications
Model
Working
Frequency
Tra
nsmi
t
Pow
er
Distance
Specifications
Recommended
Application Scenarios
MHz
dBm
km
E95-DTU(433L20-485)
410 ～
441
20
3
LoRa Spread spectrum
anti-interference、DC power
supply
Suitable for small data
volume and long-distance
application.
E95-DTU(433L20-232)
410 ～
20
3
LoRa Spread spectrum
Suitable for small data

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441
anti-interference、DC power
supply
volume and long-distance
application.
E95-DTU(433L30-485)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、DC power
supply
Suitable for small data
volume and long-distance
application.
E95-DTU(433L30-232)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、DC power
supply
Suitable for small data
volume and long-distance
application.
E95-DTU(433L20P-48
5)
410 ～
441
20
3
LoRa Spread spectrum
anti-interference、DC power
supply、
Isolated version
Suitable for small data
volume, long-distance
application, high
protection.
E95-DTU(433L20P-23
2)
410 ～
441
20
3
LoRa Spread spectrum
anti-interference、DC power
supply、
Isolated version
Suitable for small data
volume, long-distance
application, high
protection.
E95-DTU(433L30P-48
5)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、DC power
supply、
Isolated version
Suitable for small data
volume, long-distance
application, high
protection.
E95-DTU(433L30P-23
2)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、DC power
supply、
Isolated version
Suitable for small data
volume, long-distance
application, high
protection.
E96-DTU(433L20-485)
410 ～
441
20
3
LoRa Spread spectrum
anti-interference、AC power
supply、
Suitable for small data
volume, long-distance
application
E96-DTU(433L20-232)
410 ～
441
20
3
LoRa Spread spectrum
anti-interference、AC power
supply、
Suitable for small data
volume, long-distance
application
E96-DTU(433L30-485)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、AC power
supply、
Suitable for small data
volume, long-distance
application
E96-DTU(433L30-232)
410 ～
441
30
8
LoRa Spread spectrum
anti-interference、AC power
supply、
Suitable for small data
volume, long-distance
application
★Note: In fine weather, open environment without obstruction, 12V/1A power supply, 5dBi suction cup antenna, the
antenna is 2 meters above the ground, and the factory default parameters are used.

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3.2 General specifications
No.
Terms
Specifications
Description
1
Size
92*67*30 mm
Review installation dimensions for details
2
Weight
95 g
Weight tolerance 5g
3
Working
Temperature
-40℃～+85℃
Meet the needs of industrial use
4
Voltage Range
8～28V（DC）
85～265V（AC）
It is recommended to use 12V or 24V for DC version
AC version can use 110V/220V
5
Interface
RS485/RS232
RS485 or RS232, subject to product identification
6
Baud Rate
Default 9600
Baud rate range 1200～115200
7
Address Code
Default 0
A total of 65536 address codes can be set
3.3 Frequency range and channel number
Model
Default
Frequency
Frequency Range
Channel
Spacing
Number of Channels
Hz
Hz
Hz
E95/E96-DTU(433Lxxx)
433M
410～441M
1M
32，Half Duplex
★Note: In the same area, multiple groups of digital DTUs are used for one-to-one communication at the same time. It is
recommended that each group of digital DTUs set the channel spacing above 2MHz.
3.4 Transmit power level
Model
20dBm / 30dBm
17dBm / 27dBm
13dBm / 24dBm
10dBm / 21dBm
E95/E96-DTU(433Lxxx)
Factory Default
√
√
√
★Note: The lower the transmission power, the closer the transmission distance, but the working current will not decrease in the
same proportion. It is recommended to use the maximum transmission power.
3.5 Air speed class
Model
Default Air Rate
Level
Air Speed Class
bps
bps
E95/E96-DTU(433Lxxx)
2.4k
6
0.3k、1.2k、2.4k、4.8k、9.6k、19.2k
★The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, when the
speed meets the requirements of use, it is recommended that the airspeed be as low as possible.

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3.6 Current parameter
Model
Transmitting Current mA
Waiting Current mA
12V
24V
12V
24V
E95/E96-DTU(433L20x)
230
135
20
12
E95/E96-DTU(433L30x)
306
152
22
18
★Note: It is recommended to reserve more than 50% of the current margin when selecting the power supply, which is conducive to
the long-term stable operation of the DTU.
3.7 Sending and receiving length and sub-packing method
Model
Cache Size
Sub-packing Method
E95/E96-DTU(433Lxxx)
512 bytes
Auto sub-packing 197 bytes
★Note:
1. If the DTU’s single received data is greater than the single packet capacity, the excess data will be automatically allocated to the
second transmission until the transmission is completed;
2. The single received data of the DTU cannot be larger than the buffer capacity.

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4. Function Details
4.1 Point-to-Point transmission (hexadecimal)
4.2 Broadcast transmission (hexadecimal)

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4.3 Broadcast address
Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
When DTU A is used as a transmitter (same mode, transparent transmission mode), all receiving DTU under the 0x04 channel
can receive data to achieve the purpose of broadcasting.
4.4 Listening address
Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
When DTU A is receiving, it can receive all the data under channel 0x04 to achieve the purpose of monitoring.
5. Operating Mode
E95-DTU has four working modes. When there is no demanding low power consumption requirement, it is recommended to configure
the DTU to transparent transmission mode (mode 0) if normal communication is required;
The default setting of the DTU at the factory is transparent transmission mode (mode 0).
No.
Type
M1
M0
Description
Mode 0
Transparent
transmission
mode
Light
Off
Light
Off
Serial port open, wireless open, transparent transmission
(factory default mode)
Mode 1
WOR Mode
Light
Off
Light
On
WOR transmission mode, data packet comes with wake-up code
Mode 2
Power Saving
Mode
Light
On
Light
Off
WOR receiving mode, saving its own receiving power
consumption, this mode cannot transmit
Mode 3
Configuration
Mode
Light
On
Light
On
The DTU can be programmed using the configuration software
5.1 Transparent transmission mode (mode 0)
Type
When the M0 indicator light is off and the M1 indicator light is off, the DTU is working in mode 0
Sending
Users can input data through the serial port, and the DTU will start wireless transmission.
Receiving
The DTU 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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5.2 WOR mode (mode 1)
Type
When the M0 indicator light is on and the M1 indicator light is off, the DTU is working in mode 1
Description
WOR transmission mode, data packet comes with wake-up code
5.3 Power Saving mode (mode 2)
Type
When the M0 indicator light is off and the M1 indicator light is on, the DTU is working in mode 2
Description
WOR receiving mode, saving its own receiving power consumption, this mode cannot transmit
5.4 Configuration mode (mode 3)
Type
When the M0 indicator light is on and the M1 indicator light is on, the DTU is working in mode 3
Description
The DTU can be programmed using the configuration software

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6. PC Configuration Instruction
The following figure shows the display interface of the E95/E96-DTU(433Lxxx) configuration host computer. The user
can switch to the configuration mode through the MODE button, and quickly configure and read the parameters on the host
computer.
7. Program the DTU
Operating
Mode
M1
M0
Remark
Configuration
mode
Light On
Light Off
Only use the configuration software to program the DTU in the
current mode

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1. Programming can only be carried out in a specific working mode (see the above table). If the programming fails, please confirm
whether the working mode of the DTU is correct.
2. If you don't need complicated programming to open the E95/E96-DTU(433Lxxx) configuration software, you can modify the
relevant parameters.
8. Connection Diagram in Test and Practical Application
9. Related Products
Model
Interface
Type
Frequency Hz
Transmit
power
dBm
Dista
nce
km
Features
E95-DTU(433L20-485)
RS485
410 ～441
20
3
Cost-effective LoRa, rail type, RS485,
E90-DTU L series intercommunication, DC
power supply
E95-DTU(433L20-232)
RS232
410 ～441
20
3
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, DC
power supply
E95-DTU(433L30-485)
RS485
410 ～441
30
8
Cost-effective LoRa, rail type, RS485,
E90-DTU L series intercommunication, DC
power supply
E95-DTU(433L30-232)
RS232
410 ～441
30
8
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, DC
power supply
E95-DTU(433L20P-485)
RS485
410 ～441
20
3
Cost-effective LoRa, rail type, RS485,
E90-DTU L series intercommunication, high
protection, DC power supply
E95-DTU(433L20P-232)
RS232
410 ～441
20
3
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, high
protection, DC power supply
E95-DTU(433L30P-485)
RS485
410 ～441
30
8
Cost-effective LoRa, rail type, RS485,

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E90-DTU L series intercommunication, high
protection, DC power supply
E95-DTU(433L30P-232)
RS232
410 ～441
30
8
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, high
protection, DC power supply
E96-DTU(433L20-485)
RS485
410 ～441
20
3
Cost-effective LoRa, rail type, RS485,
E90-DTU L series intercommunication, AC
power supply
E96-DTU(433L20-232)
RS232
410 ～441
20
3
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, AC
power supply
E96-DTU(433L30-485)
RS485
410 ～441
30
8
Cost-effective LoRa, rail type, RS485,
E90-DTU L series intercommunication, AC
power supply
E96-DTU(433L30-232)
RS232
410 ～441
30
8
Cost-effective LoRa, rail type, RS232,
E90-DTU L series intercommunication, AC
power supply
10. Precautions for Use
1. Please take good care of the warranty card of the device. The warranty card contains the factory number (and important technical
parameters) of the device, which has important reference value for the user's future maintenance and new equipment.
2. During the warranty period, if the DTU is damaged due to the quality of the product itself rather than man-made damage or
natural disasters such as lightning strikes, it enjoys free warranty; please do not repair by yourself, and contact our company if
there is a problem. Ebyte provides first-class After-sales service.
3. Do not operate this DTU in the vicinity of some flammable places (such as coal mines) or explosive dangerous objects (such as
detonators for detonation).
4. A suitable DC stabilized power supply should be selected, which requires strong anti-high frequency interference, small ripple,
and sufficient load capacity; preferably, it should also have over-current, over-voltage protection and lightning protection
functions to ensure that the DTU is normal jobs.
5. Do not use it in a working environment that exceeds the environmental characteristics of the DTU, such as high temperature,
humidity, low temperature, strong electromagnetic field or dusty environment.
6. Don't let the DTU continuously be in full load transmitting state, otherwise the transmitter may be burnt out.
7. The ground wire of the DTU should be well connected with the ground wire of the external equipment (such as PC, PLC, etc.)
and the ground wire of the power supply, otherwise the communication interface will be burnt easily; do not plug or unplug the
serial port with power on.
8. When testing a DTU, you must connect a matching antenna or a 50Ω dummy load, otherwise the transmitter will be easily
damaged; if the antenna is connected, the distance between the human body and the antenna should be more than 2 meters to
avoid injury. Touch the antenna when transmitting.
9. Wireless data transmission stations often have different communication distances in different environments. The communication
distance is often affected by temperature, humidity, obstacle density, obstacle volume, and electromagnetic environment; in order
to ensure stable communication, it is recommended to reserve more than 50% The communication distance margin.
10. If the measured communication distance is not ideal, it is recommended to analyze and improve the communication distance

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from the antenna quality and antenna installation method. You can also contact suppor[email protected] for help.
11. When selecting the power supply, in addition to keeping 50% of the current margin as recommended, it should also be noted that
its ripple must not exceed 100mV.
12. Wireless communication products need to be connected to an impedance-matched antenna to work normally. Even short-term
tests cannot be omitted. Product damage caused by this reason will not be covered by the warranty.
Important Statement
1. Ebyte reserves the right of final interpretation and modification of all contents in this manual.
2. Due to the continuous improvement of product hardware and software, this manual may be changed without prior notice. The
latest version of the manual shall prevail.
3. It is everyone's responsibility to protect the environment: In order to reduce the use of paper, this manual only prints the Chinese
part, and the English manual only provides electronic documents. If necessary, please download it from our official website; in
addition, if not specifically requested by the user, the user can order in bulk At the time, we only provide product manuals
according to a certain percentage of the order quantity, not every DTU is matched with it, please understand.
Revision History
Version
Date
Description
Issued By
1.0
2020-08-17
Original Version
ken
1.1
2021-02-05
L series integration
ken
About us
Technical support: [email protected]m
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