... TREX-C900 heater controller for rubber machinery Widely used in temperature, humidity, throw, weight, water level, refrigeration ... effectF: PID reverse adjust (for heating) D: PID positive adjust(for refrigeration)Input signals(Fixed)Thermo ... field disturbModel naming:Application: PCB machine, PCB washing machine, Food making machine, Biscuit making machine, foam rubber machine, molding machine, etc.