TEH-K300 Refrigeration controller, (-40~110C), 3 Relay outputs(10A), Defrosting, Alarm, 2 NTC Probes, High-quality, Low-price. TEH-K300 series Refrigeration controller is suitable for any application on refrigeration units at normal or low temperature. Leading the controller technology develop in refrigeration field. Adopting redundancy technology, high anti-interference, can be used in any ...