... , mA, %,%LEL,%VOL 2)Display:backlight LCD, LED 3)Humidity: 10-95 ... LCD display: measuring range,digital gas reading ,units, bar graph , system status etc.* International standard plug-in sensor, Plug and Play! .* Sensor replacement ... without recalibration, automatic sensor data recognition. Sensor fault signal output monitoring and indicating.* Programmable alarm operation value, low or high ...