... ~50celsius4. Control pump, compressor, defroster & fan separately Functions and features:ECB-6030 is specially designed for refrigerating unit. Double-screen display ... -phase five-wire (or three-phase four-wire), 380 VAC ±10%, 50Hz2. Temperature measuring and controlling range: -50~+50oC3. Accuracy: ±1oC4 ... water pump (KW): 4 Tecol Cold storage electric control system ECB-6030