Dual Sensor controller with built in Transmitters Power Supply up to 0.8A output LCD display standard Keyboard standard Auto Zero for both sensors standard PID Control output on 0-10V, 4-20mA or 24VAC open - off - closed. Modbus RTU Coms standard Accuracy 0.5% of Full Scale Ukas Calibration Certificate standard Remote Modbus Display connector standard Two alarm relays Alarm Buzzer fitted ABS plastic enclosure IP65.