... /heat mode can be set), for cooling or heating control Temperature display, temperature controlling (refrigeration/heat mode can be set), compressor start ... alarm, one external alarm input, password, probation time 1,Temperature display range: -50~150°C(The resolution is 0.1 ... 10% 50Hz (Refer to the wiring diagram)3,Operating environment: temperature -20°C~50°C, humidity≤85%4,Relay contact capability ...