... controller, (-40~110C), 3 Relay outputs(10A), Defrosting, Alarm, 2 NTC Probes, High-quality, Low-price. TEH-K300 series Refrigeration controller ... controller technology develop in refrigeration field. Adopting redundancy technology, high anti-interference, can be used in any severe environment. Outputs ... SpecificationsIntelligent temperature controller (digital temperature controller) specifications ...