Provides PWM regulation of cooling and heating output for thermoelectric cooler. Automatically switches between cooling and heating. Six cooling temperature set points range from 22.5 to 35°C. Seven heating temperature set points range from -15 to 15°C heating function can be easily disabled if desired. LEDs indicate cooling and heating mode, low and high temperature alarms and overall system status. Dry contact relay output provides for external alarm indication. Can be mounted in a convenient dry location near the thermoelectric cooler; mounting hardware included. RAL 7035 light-grey powder-coat painted galvanized steel.