... based on the temp. of return air inlet, the defrost sensor controls defrost temp., defrost on at 2, defrost off at ... -DC32V)Power consumption3WCurrentMax.150mAInput1) Inside temp. sensor(25,Rb=5K,B=3274) 2) Defrost sensor(25,Rb=5K,B=3274)3) Pressure ... )Our Principle: Professional - Focus - Attention Our Cooperation Partners: CK200211 bus A/C control panel