Oven Industries offers the 5R9-350 field configurable low cost temperature controller.  Accessories available are digital display, keypad, sensors and cable (not shown).

This open board temperature controller is specifically designed with a proportional integral control algorithm to provide the most precise control to thermoelectric (Peltier effect) modules at the most economical price. The controller can be set up for heat or cool and can run ramp and soak profile. Pulse Width Modulation controls the power level in the thermoelectric module at a base frequency of 2.5 KHz. Theoutput stage is high resolution. Visit Oven's website for more specifications and features.