RMC-T300 - 4 Thermocouple Inputs, 4 Relay and 4 PWM Output ModBus RTU Module
Haidar's  RMC-T300 is 4-ch thermocouple inputs ,4-ch PWM outputs and 4-ch relay output ModBus module. Different from other modules, RMC-T300 is not only used to monitor a process temperatures but also can be used to control the process temperatures and up to 4 zones or loops. Three types of control modes: P, ON/OFF and Manual, accepts 7 types of thermocouples, 4-ch PWM or general purpose digital outputs and 4 general purpose relays. Moreover, the user can read the status of the termocouples (open, shorts), relays and digital outputs from the on board LEDs. Built-in full-duplex RS485 ModBus RTU or ModBus TCP interface. 


  • Full-Duplex RS485 interface using ModBus slave RTU communication Protocol
  • Optional ModBus TCP Protocol
  • Powerful 32-bit @ 80MHZ microcontroller on board
  • 4-ch thermocouple inputs
  • 4-ch PWM digital outputs (24V @ 0.5A) 
  • 4-ch type A relay outputs 
  • Single 24VDC power input
  • Optional K, J, N, T, S, R, or E type. Default type K thermocouple
  • Up to 4 temperature control loops
  • Three types of control modes: Proportional, ON/OFF or Manual
  • 1ºC temperature resolution
  • ±2ºC temperature accuracy 
  • Detects thermocouple shorts to GND or VCC
  • Detects open thermocouple
  • Programmable digital filters, sampling frequency, averaging and range
  • Programmable Low and High Alarms for each control loop 
  • LED indicators for Power, RX, TX, HB and Error
  • LED indicators for thermocouple status, relay outputs and PWM outputs
  • Plug-in terminal blocks
  • Dual RJ45 connectors allowing a chain of multiple modules
  • Data and Power (optional) over single RJ45 cable up to 1200 meters
  • ±80V fault and ±8KV ESD protection on the RS422 lines
  • Communication speed and address are set via on board DIP switches
  • Full industrial temperature from -40 to 85 Deg C
  • Optional DIN-RAIL mounting plate
  • Watchdog system timer
  • Communication speed from 9600 bps to 115.2 Kbps
  • Free modbus test and simulation software
Ordering Information:

RMC-T300-S [ ModBus RS422 Module]
Quantity  1+  25+  50+ 100+ 
 Unit Price  $300.00  $285.00  $270.00  $255.00
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RMC-T300-E [ ModBus TCP Module]
Quantity  1+  25+  50+ 100+ 
 Unit Price  $350.00  $332.50  $315.00  $297.50
 Saving %  0%  5%  10%  15%