12Vac/dc 1 relay output 8A for compressor 1 relay output 8A for defrosting 1 relay output 8A for evaporator fans 1 relay output 5A for alarm/light 2 configurable digital inputs 3 selectable NTC/PTC probes (not included) LINK- and LINK+ connection with RTC function TTL serial door front dimension 74x32xdepth 67 mm mounting hole 71x29 mm