LM200 | LC144

The LM200/LC144 series utilizes the wireless LoRa technology to extend Modbus/RTU and Analog Input Output transmission with long-distance, wide-coverage, and low power consumption LPWAN network. LM200 is the LoRa Master to receive and send multiple LC144 LoRa Controllers Analog Inputs, Outputs or Modbus RS485 data. Rule Chain can be configured in LM200 to pair or mirror two LC144 controllers, or to group multiple LC144 for logic control. One LM200 can connect up to 250pcs LC100 LoRa nodes and LoRa wireless distance can reach up to 3-6KM. LC144 supports multiple analog inputs and outputs, such as voltage inputs and outputs, current inputs and outputs, PWM output and one RS-485 port for Modbus RTU slave for different IoT applications. The LM200 and LC144 offer great flexibility in wireless IoT applications, such as LED light control or analog signals reproduced at remote site to replace traditional wiring.
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Analog I/O  Extension & Tracking by LoRa

•Transparent /Reproduce Analog Signal  by LoRa
•LM200 Polling  Source LC144  specific  Channel and Output to Target LC100 specific Channel
•Create / Edit Tracking Rule by Utility Tool
•Achieve 2-Sites Analog Tracking

V / V, V / A, A / A Auto I/O Tracking
(LC144 + LM200)

•V / V Tracking – Local Input Voltage , Remote  Output Voltage
•V / A Tracking – Local Input Voltage, Remote Output Current in V/A Ratio
•A / A  Tracking – Local Input Current, Remote  Output Current
•A / V Tracking – Local Input Current , Remote  Output Voltage in A/V Ratio
•20  I/O Rule Entries (Maximum)

Tradition Modbus/RTU Operating Mode

•Utilize Modbus/RTU protocol for LoRa Agent / LoRa Node configure and communication
•Auto forward Modbus Data to Far-End node
•Auto re-present Far-End Modbus Data at Local Bus

PWM Output with Duty Cycle Control

•5V PWM Output / 30V Open Drained (O.C.)
•Duty Cycle Adjustable -  100Hz~1Khz , 0.2% Accuracy

Secured & Reliable Radio Communication

•ECHO & Re-Send Mechanism
•AES 128 Data Encryption 

Event Log & Utility Monitoring (LM200)

•1K Event Log Entries – Polling Fail, Remote Control Fail
•On-Line Monitoring by Utility

Windows© Configure Tools

•User-Friendly, Model Auto Detection
•Analog IO Parameter Configuration and Auto Display
•On-Line Monitoring, Log File Download
•Micro-USB Configuration


Industrial Application

•10~30V DC wide power range input
•Low Power Consumption
•Radio Signal Coverage up to 6KM
•-40 ~ 75°C / 90%H  Operating Temperature / Humidity
•EN 301489 / EN300220 / EN62368-1 Compliance

Wireless Specification

-900 model : Frequency Support EU 868Mhz, US915Mhz, AS 923Mhz, KR 920Mhz

-400 model : Frequency Support EU 433Mhz

Frequency adjust by Utility

Wireless Technology Low Power Wide Access – LoRa MAC Technology
Radio TX Power 22dBm
Radio RX Sensitivity - 148dBm, SF=12 @ 250bps
Spreading Factor SF5/SF6/SF7/SF8/SF9/SF10/SF12, Default SF7
Remote  Configurable by ModBus RTU / Register writing command
Demodulator SNR LoRa Demodulator Signal to Noise Ratio: -2.5dB ~ -20dB
Operating Mode Modbus protocol over the Air (LoRa MAC Transparent Transmission) with configurable Echo time and retransmission technology
Forwarding Data Buffer 256Bytes FIFO Data Buffer for LoRa signal transmission
Data Encryption 128bits AES with configurable key
System Management 1 x Micro USB 2.0 port for system configuration
Software Utility

Windows© Based  Utility  for parameters configuration, monitoring, log file download


On-Line Utility Monitoring

Event Log

1K Event Log Entries

I/O Interface
Antenna Connector 1x 50 ohm, Female SMA
Serial Interface 2-wires RS-485 Terminal Connector with 1kv isolation
Connector Type: Removable Terminal Connector
Supported Model: LM-100 (Slave), LC-100(Host)
Serial Parameters Baud Rate: 1200bps, 4800bps, 9600bps,115,200bps
Data Bits: 8
Parity Check: None
Stop Bit: 1
CRC: Enable (default)
Current Input 2 Channels
Detection Range: 4-20mA
Accuracy Level: 0.3%
Voltage Input 2 Channels
Detection Range: 0~10 V
Accuracy Level: 0.2%
Current Output 1 Channel
Output Range: 4-20mA @ Typical 24V Power Input
Accuracy Level: 0.3%
Voltage Output 1 Channel
Output Range: 0~10V
Output Type: Open Collect (O.C.)
Accuracy Level: 0.2%, Full Scale (F.S.)
PWM Output Frequency: 100Hz~1KHz with 0.2% Duty-Cycle Accuracy
Output Type-1: 5V, 200mA (Max)
Output Type-2: Open Collect (O.C.), 10V /200mA (Max)
System Indication
LED Power (On):  System Power applied
LoRa (Blinking): LoRa RF Signal on Communication
Power Requirement
Input Rating Typical DC 24V, Rating: 10~30V
3-Pins Removable Terminal Connector for V+ ,Com and Earth Ground
Reverse Protection Yes
Power Consumption LM200: 1 Watt  @ DC 24V  power input
LC144: 3 Watts @ DC 24V power input
Installation DIN Rail Mount
Enclosure Material UL94v0, ABS , Anti- U/V
Ingress Protection IP 40
Dimension 26(D) x 102.5 (H) x 72 mm (W)  / with wall mounting clip
Weight 115g
Operating Temperature -40°C~75°C, 0% ~ 90%, Non-Condensing
Storage Temperature -40°C~80°C, 0% ~ 90%, Non-Condensing
Reliability & Warranty
MTBF >20000 Hours
Warranty 3 Years, No-Natural damaged

Radio Equipment Directive

RED 2014/53/EU

EMC: EN 301489-1 V2.2.3 (2019-11)/ EN 301489-3 V2.1.1 (2019-03)

Radio: EN 300 220-1 v3.1.1 (2017-02)/ EN 300 220-2 v3.2.1 (2018-06)

Health: EN 50663:2017 / EN 62479:2010

Safety: EN62368-1: 2014+ A11:2017

Compliance with EN 55032:2015/A11:2020, EN 55035:2017

IEC 61000-4-2 ESD

IEC 61000-4-3 RS

IEC 61000-4-4 EFT

IEC 61000-4-5 Surge

IEC 61000-4-6 CS

IEC 61000-4-8 Pulse Magnetic Field


User-Friendly Utility to configure Analog IO parameters and Rule Chain

The LM200 and LC144 are configured through a user-friendly Windows utility free downloaded from www.womaster.eu and with a micro USB cable to connecting the device and the PC.

Model Description


 LoRa Master /Modbus RTU Client Agent, Group IO Mapping, Logic Rule, (Must work with LC144) (with LoRa antennas)

1 x  RS-485 Slave 2-wire, 1 x SMA LoRa Antenna Connector


LoRa End-Node, 8CH AIO, 1 Modbus RTU 485 Host


2 x 0~10V input, 0.2% accuracy

2 x 4~20mA input, 0.3% accuracy

1 x 0~10V Output, Open Collect (O.C.) Type, 0.2% accuracy

1 x 4~20mA Output, 0.3% accuracy

1 x PWM Output (0~5V), 200mA (max), 0.2%Duty_Cycle Accuracy  @1khz

1 x PWM (0~10V), Open Collect (O.C.) Type, 200mA, 0.2% Duty Cycle accuracy  @1Khz, 10V(Max)

1 x RS485 Host, 2-wire

1 x SMA /LoRa Antenna Connector


850~930 Mhz by software configuration


410~493 Mhz by software configuration

Packing & Accessories
  LoRa Device x 1
  LoRa Antenna x 1 (6dBm , SMA)
  Quick Installation Guide x1


Optional Accessories


Din Rail Power Supply, INPUT:85-264VAC, 120-370VDC, OUTPUT: 24VDC/1.7A, -20 ~ +70℃



Out-Door LoRa Antenna, Magnetic Sucker, SMA Male, 850-925MHZ, 7dBi, RG174 Cable, 3M Length, -40°C~65°C



Out-Door LoRa Antenna, Magnetic Sucker, SMA Male,  433MHZ, 7dBi, RG174 Cable, 3M Length, -40°C~65°C