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868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission

I am pleased with them. It was a good choice for our small application. It is a robust device even it has a cheap price. I will use them in our further applications when we should use remote control. Thank you for your support.

—— Codreanu from Romania

Great news! We successfully performed the installation of the two units and transmitted our 4-20mA signal with both antennae. Even the smaller antenna suffices to transmit the signal without any losses whatsoever. So you can understand that we are very happy :) .

—— Kekarios from Greek

I believe you and your products. Sunny is very responsible. The RF modules are really strong and stable. Engineer's suggestions are useful to me. The most important is module's program can updrade on-line by myself. For some special projects, they can customize according my requirements. Thank you for your support all the time.

—— Singh from India

First of all I'd like to thank you for you're prompt service. The system now works perfectly. I left a positive response on your web site. I hope it attracts more customers for you.

—— Peter from Australia

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868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission

868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission
868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission 868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission 868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission

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Product Details:
Place of Origin: China
Brand Name: Lensen
Model Number: LS-RAO02
Payment & Shipping Terms:
Minimum Order Quantity: 2pcs
Price: Negotiation
Packaging Details: standard carton
Delivery Time: 2-7 days
Payment Terms: T/T, Western Union
Supply Ability: 6000pcs/month
Detailed Product Description
Frequency: 868MHz Or 915MHz Power Output: 1W
Distance: 5km Output: 2 Analog Output
Technology: Lora Signal: 4-20mA Or 0-5V
High Light:

wireless on off module


wireless cable transmitter

LS-RAO02-Lora wireless analog acquisition module
LS-RAO02-Lora Modbus RTU is a 1W I/O module, 2 analog outputs. Wireless control around 5km LOS. Use for sensor and PLC/HMI wireless communication
Using Lora 1W data module inside, it is OK to control around 5km. This wireless analog module is good for sensor data wireless collection. 
Lensen wireless analog I/O module helps you build wireless connection between sensors with PC/PLC. It is to transmit Welcome to contact our sales for more details.

  • Transparent I/O System
  • Not need internet, no third party cell, no monthly fees
  • You have full control over your own carrier
  • Real time status feedback from the remote site
  • Fast installation and easy setup


Power output1W
Products 2AO
Input type4-20mA or 0-5V or 0-10V
Output type4-20mA or 0-5V or 0-10V
Resolution ratio 24 bit
Accuracy ±0.02%
Power supply9-36V DC usually use 24V DC
Interface RS-485
Channel No.16ch default, can program via DIP switch
Antenna Sucker antenna with 1.5m cable
Working temperature -35 °C ~ +75 °C industrial
Working humidity10%-90% relative humidity, no condensation
Fix wayStandard 3.5 inch industrial DIN guild rail

Wireless pump controls
Automate your tank level without running wire between the well pump and the tank. Wireless pump controls save you time and money.
Wireless tank level monitoring
simple wireless monitoring of your tank level from a remote location and receive critical status updates.
Wireless valve activation
Open or close electronic wireless valves, solenoid valves.
Smart Agriculture
Pivot irrigation, soil pressure and temperature monitoring
Emergency notification
Receive critical status updates by email, phone, cell phone, or PDA if equipment fails
Conveyor Control
Control a conveyor motor remotely
Remote Control Relay
Use dry contact inputs to control a remote relay.
Problem Notification
Save time in large facilities by activating an overhead notification light when a problem occurs, letting the supervisor know exactly where to go.
Dust Suppression
Use wireless I/O module to operate your dust
Data Logging
Wirelessly acquire and log various data from a remote location using our analog I/O module
Stacker Control
Start and stop your stacker/reclaimir. Connect PLC in control center with stacker and reclaimer.
Proximity Detection
Mount a transmitter with adjustable range on heavy equipment, mount a receiver in a “blind spot,” and then set up the receiver to sound an alarm or turn on a light whenever the equipment is operating in the area.
Chemical Level Monitoring
Monitor water chlorination or other chemicals remotely.
Traffic Signals
Avoid having to lay new wire by using wireless transmitters and receivers to control traffic signs such as “Railroad Crossing Ahead” when a train is present.
Grain Elevators
Our wireless transmitters and receivers can be used to monitor grain elevator conditions or control different functions. To collect RS485 data. To monitor temperature and humidity in Grain.
Freight Loading
Digital I/O module for crane control and analog I/O module to send the load information wirelessly to another location.
Modbus RTU communication and corresponding value
Register types:

Register typesRead command

Write command
(Control command)

Power offFunction
Hold register0x01

Input --not support

Not keepCan read input value

A. Hold register
1. Analog input value: 0x0008~0x000B
2. Analog output value: 0x0048~0x004B
B: How to read
Hold register: can read 4 analog input or control 4 analog output at one time
Register control way



Function IDitems support
No.IC TypePLC IDModbus ID
AI1Hold register400098Read032AI/4AI
AI2Hold register400109Read03
AI3Hold register4001110Read034AI
AI4Hold register4001211Read03
AO1Hold register4007372Read/write03/062AO/4AO
AO2Hold register4007473Read/write03/06
AO3Hold register4007574Read/write03/064AO
AO4Hold register4007675Read/write03/06

About value calculation
Analog input
Our analog module’s max measure range value is : 0X7FFF
1. Directly measure current and voltage
Exact value=value you read/0x7FFF*max range
For example: to read the 1st passage of module’s (with max range of 0-20mA) input value
Register 0x0008(analog input of the 1st passage)
Feedback: 0x3801
Current value: (0x3801/0x7FFF)*20mA=8.7509mA
2. To measure sensor’s value(4-20mA, 0-6 meter level sensor)
If feedback value is less than 6554, level value is 0
If feedback value is bigger than 6554, level value=(value read-6554)/(32767-6554)*measure ranges
For example: feedback value is 0X3801, then corresponding level value is: ((0X3801-6554)/26213)*6 meter=1.7815 meter
Analog output
Analog module’s max measure range is: 0x7FFF
Directly control output current and voltage
Write register value=current or voltage value/measure range*0x7FFF
For example: to control the 1st passage of analog module whose max measure range is 0-20mA
Register 0x0048 (analog output of the 1st passage)
To write register value:(8.75/20mA)*0X7FFF =14336=0x3800
868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission 0
868MHz / 915MHz Wireless I O Module RTU 4-20mA Analog Signal Wireless Transmission 1

Contact Details
Shenzhen Qianhai Lensen Technology Co., Ltd

Contact Person: Sunny

Tel: +8613826574847

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