... on the screen. Sensor is optional on PT-100 or NTC or thermocouple. Long distance controlling is available by two wires ... , Fan, lamp, demist heater, electrical heater or gas heater. NTC or PT100 input is for room temperature or defrost termination temperature or condenser temperature overhigh alarm ... for lamp: N.O. 12A/250V~; 50/60HzSensor: NTC or PT100, 1~3pcs (for room temp., for evaporator temp., ...