Thermostat High control accuracy at the maximum of 0.1; Double pid control functions, capable of controlling heating and cooling; General input, capable of selecting 56 kinds of different input information; A variety of output modes to greatly meet many requirements for load control; Capable of selecting pv (measurement value) or sv (set value) 4-20ma transmission output functions; Capable of selecting external remote control set value functions, which can be used for multiple unit synchronous setup; Output percentage restriction function and manual/automatic non-disturbance switching; Automatic diagnosis function, capable of displaying information on any failures; Capable of selecting this rs485 communication function Automatic diagnosis function, capable of displaying information on any failures; Capable of selecting this rs485 communication function