The LDC−3926559 TEC Controller Module contains a single 48 W, 6 A independent temperature controller that drives a thermoelectric cooler (TEC). The temperature controller features a bi−polar current driver that works with most TEC modules to deliver precise temperature control over a wide range of temperatures. The temperature controller operates using only thermistor−type temperature sensors. The LDC−3926559 features a TEC module voltage measurement, selection of thermistor current range, and control loop gain adjustment from 1 to 127.