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M320T DO or Relay Module

Regular price $153.99 USD
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M320T - 8CH Digital Output Module (RS485/Ethernet)

The M320 Ethernet Remote I/O module provides 8 digital outputs, supports 10Hz~300Khz high speed pulse output or relay outputs. All of the I/O's with high sampling frequency and special filtering strategy to ensure it’s reliability.



The M320 Ethernet Remote I/O Module is an industrial class, isolated designed, very reliable, highly stable and very precise data acquisition module. It features an embedded 32-Bit High Performance Microprocessor MCU, Integrated 1-2 Industrial 10/100M adaptive Ethernet module inside. It provides multiple I/O’s, supports standard Modbus TCP, can be integrated into a SCADA, OPC server, and other automation systems. It is designed for working in harsh industrial environments and is widely used in a variety of industrial automation, security monitoring system, automatically measurement and control system. 

The M320T Ethernet Remote I/O module provides a RS485 interface, through the RS485 bus, it can cascade Modbus RTU I/O devices or Modbus RTU meters, e.g.: a variety of digital input or digital outputs, analog inputs or outputs, thermal resistance IO module combination. At the same time, the Ethernet Remote I/O module has register mapping function, the cascade Modbus RTU I/O data are automatically collected to the mapping memory area, the Modbus TCP Client query without waiting then can get a quick response to meet the industrial timing requirements.


1. Embedded 32-Bit High Performance Microprocessor MCU, built-in watchdog. 
2. Wide range power supply 12 ~ 36VDC with over voltage and phase-reversal protection. 
3. Management and configuration via LAN connection configuration software for effortless operation and maintenance. 
4. Integrated 10/100M adaptive Ethernet module, supports Modbus TCP protocol. 
5. 8 digital output or relay output, supports 10Hz~300KHz high speed pulse output. 
6. High sampling frequency and special filtering strategy to ensure reliability. 
7. 1 RS485 Serial port, supports Modbus RTU/ASCII Master, can extend I/O modules. 
8. Supports register mapping function and extends I/O inquiry strategy. 
9.Provides 1 channel 12~36VDC power source output for external device, saving wiring cost. 
10.LED instructions work status, with reset button to reset, easy on-site installation and commissioning. 
11.Using metal shell, protection class IP30. Metal shell and system security isolation, especially suitable for industrial applications in the field. 
12.Small size, L105mm (about 4.13 in) * W88mm (about 3.46 in) * H30mm (about 1.18 in), compatible wall installation and DIN35mm industrial rail installation. 



Digital Output

Type Sink
I/O Mode
DO or Pule Output
Pulse Output Frequency
10Hz-300KHz (only the 1st channel can be sued as high speed pulse outputs)
Over-Voltage Protection
Over-Temperature Shutdown
175°C (typical, 150°C (min)
Load Current
Max. 500 mA per channel
Digital Sampling Frequency

If DO is Sink type, then no isolation

If DO is Relay, then it's electrical isolation


Working Power Requirements

Input Voltage

12 to 36 VDC, Peak Voltage; +40VDC

Power Consumption: Less Than 3W

Input Current 139mA @24VDC


Power Output

Output Voltage

12 to 36 VDC
Output Current 139mA @ 24 VDC



Ethernet 10/100Mbps RJ45 ports
Protection 15KV ESD Protection
Protocols Modbus TCP, TCP/IP
Max TCP Connection 5


Serial Port

RS485 MODBUS- RTU Protocol, Modbus-ASCII Protocol
Protection 15KV ESD Protection
Modbus Slave Address 1-255
Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 128000Bps
Mapping Registers Bit Type: 300 Registers, 16-Bit Type: 300 Registers


Physical Characteristics

Wiring I/O Cable Max. 14AWG
Dimensions 105mm x 88mm x 30mm
Weight Under 205grams
Mounting DIN Rail or Wall


Environmental Limits

Operating Temperature

Standard Model: -10 to 60°C (14 to 140°F)

Wide Temp. Models: -40 to 75°C (-40 to 167°F)

Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Altitude Up to 3000m




M320T Data Sheet Download

M320 User Manual


Typical applications: 

  1. BTS Monitoring.
  2. Security Alarm System applications.
  3. Supervision and monitoring alarm systems.
  4. Automatic monitoring system.
  5. Vending Machines security protection.
  6. Pumping Stations, Tanks, Oil or Water levels.
  7. Buildings and Real Estate.
  8. Weather Stations. 
  9. River Monitoring and Flood Control.
  10. Oil and gas pipelines.
  11. Corrosion protection.
  12. Temperatures, water leakage applications.
  13. Wellheads, boats, vehicle.
  14. Energy saving, streetlights control system.
  15. Valve controls.
  16. Transformer stations.
  17. Unmanned machine rooms.
  18. Control room application.
  19. Automation System, M2M.
  20. Access Control System.
  21.  PLC Gateway, PLC Remote Monitoring.


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