Novatek msk 102 series freezer temperature and defrost control relays novatek msk 102 1 the novatek msk 102 1 is designed to maintain the temperature of electrical freezing equipment and to control its defrosting cyclethe msk 102 1 has one sensor input and controls the freezer temperature by switching the compressor on and off it performs automatic defrosting by switching off the compressor for a user defined timethe unit provides protection by switching off the compressor if the electrica