Hanyoung DX9 Digital Temperature Controller in Pakistan BR8228 Description A temperature controller is an instrument used to control temperature calculating the difference between a setpoint and a measured temperature . The controller takes an input from a temperature sensor and has an output that is connected to a control element such as a heater or fan. Features: PID auto-tuning Select direct action / reverse action internally High and low alarm output Control loop interruption alarm (LBA) Decimal point indicator and high/low setting limitation Retransmission output