The Eliwell ID974 Plus is a three-relay electronic controller for medium and low temperature refrigeration. It provides relay outputs for compressor (8(3)A), defrost and fans, NTC/PTC/PT1000 probe inputs (room and evaporator), electric, off-cycle and hot gas defrost, 1 configurable digital input, HACCP function, and RS485 connectivity. Format: 32x74mm, 230Vac, IP65 front panel.