Digital temperature controller For fan cooling freezers& cold rooms of low temperature Waterproof panels Double displays (with an outer small display shows temperature synchronously) Manuallyf=automatically defrost by electric heater Evaporator fan control Time/temp.setting to end defrosting Parameter locking Renew factory defaults by button operation Range:·í45f+45f¦(·í40f+120+H) Accuracy: f+1f¦(2+H) Sensor: NTC, 2pcs (room temperature &defrosting control) Power supply: 230VAC or 120VAC 50 / 60Hz Compressor:20A/ 250VAC (1HP) Heater:10A/250VAC Evap.fan:5A / 250VAC Host controller dimension: 77(L)f-35(W)f-60(D)mm Mounting hole dimension of host panel:71(L)f-29(W)mm Accessional display dimension: 83(L)f-23(W)f-18(D)mm Mounting hole dimension of accessional display:66(L)f-19.5(W)mm 50pcs/carton Gross Weight:28.5kg Carton Dimension: 48f-28f-39cm