18 A Thermoelectric Controller 5R9-355

The 5R9-355 is a complete mechanical enclosure temperature controller with mounting holes, user friendly keypad menu selections and a vivid LCD display. Functionally this product offers temperature resolution of 0.01°C and control stability of ± 0.1°C. The 5R9-355 is specifically designed with a proportional integral control algorithm to provide the most precise control to thermoelectric (Peltier effect) modules at a very economical price. The controller can be setup for heat or cool and can perform ramp & soak profiles.


  • Dual outputs or output can be synchronized for higher output current
  • Outputs are open drain
  • Proportional Integral derivative control algorithm
  • Pulse width modulated output
  • TTL to USB communication via optional OI-TTL-Cable.
  • Setup and Monitor control through included GUI & DLL.
  • Ramp & soak profile
  • Heat or cool operation



  • Input Voltage: 7 to 36 VDC
  • Output Voltage: 0 to 36 VDC
  • Load Current: 0.1 to 15 A per channel, total current 18 A max.
  • Temperature Resolution: 0.01 °C
  • Temperature Range: -40 °C to 250 °C
  • Control Stability: ± 0.1 °C
  • Output power control: 645 W
  • 2.5 kHz base frequency pulse width modulated output
  • Output resolution: 28800 counts
  • Adjustable Bandwidth, Integral & Derivative settings (PID) via OI-TTL-Cable and supplied software
  • Grommets on bottom of case for easy wiring of the controller and sensor to your application
  • Dimensions: 1.34” H x 4.20” W x 5.83” L



18 A thermoelectric controller 5R9-355 datasheet

18 A thermoelectric controller 5R9-355 drawings

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