Novatek-MSK-301-8-Freezer-Temperature-&-Defrost-Control-Relay-Novatek-MSK-301-8-P-The-Novatek-MSK-301-8-is-designed-to-control-freezers-refrigerated-counters-&-other-refrigerated-shop-&-industrial-equipment-by-switching-1-or-2-compressors-or-fans-on-or-off-according-to-the-temperature-range-selected-Depending-on-the-temperature-difference-between-the-refrigerating-chamber-&-fan-air-stream-the-relay-can-be-programmed-to-start-an-automatic-defrost-cycle-P-P-If-fitted-with-a-suitab