Telemeter Electronic TR12-PI-2Q2 ControllerPI cooling controller with PWM output for controlling compatible Peltier coolers using Pt100 temperature sensors.Source-listed features and ratings Model No.: TR12-PI-2Q2 PI Cooling Controller with PWM Output For controlling Peltier coolers in conjunction with Pt100 temperature sensors Peltier-friendly control For operating voltages from 9 V DC to max. 50 V DC Switching current up to 12 A Robust construction Additional legacy reference: 43168. The listed 9 V DC to maximum 50 V DC range and switching current up to 12 A require confirmation for the exact installation and load; they do not imply a supplied power source.This is the controller, not a temperature sensor, cooler or complete refrigeration system. Confirm Pt100 wiring, output/load compatibility and required configuration before ordering. Sensor, cooler, wiring and power-supply inclusion are not specified.