Novatek msk 102 series freezer temperature and defrost control relays novatek msk 102 2 the novatek msk 102 2 is designed to maintain the temperature of electrical freezing equipment and to control its defrosting cyclemsk 102 2 has two sensor inputs 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 time and by controlling a defrosting heater within the freezerthe unit provides prot