Model 5R7-570(A) is designed with a proportional-integral control algorithm to provide precise control to thermoelectric modules (Peltier). The H-bridge temperature control provides a seamless transition between heating and cooling, eliminating dead spots. Green LED for heat and blue LED for cooling indicate mode, and simultaneous illumination indicates the load circuit is off due to an open sensor. Pulse-width modulation controls the power level in the thermoelectric module at a base frequency of 1 Khz. The open-board electronic temperature controllers are RoHS compliant.

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