THC dual temperature control has two individual temperature control function.In refrigeration system,in order to prevent the temperature too high at air outport,meanwhile,ensure the reasonable oil temperature for compressor,THC can be used to fulfill this purpose.Use one high temperature bulb at air outlet side, the other bulb in the compressor oil ,either one of the bulb senses the temperature high than set point, the product will send out the signal to arlet to protect the compressor.