... LED 3)Humidity: 10-95%RH (non condensing) Gas transmitter Technical features* 4-20mA, 2 wire connection , ... . * Multi-parameter backlight LCD display: measuring range,digital gas reading ,units, bar graph , system status etc.* International ... units. * Automatic temperature compensation ensure the correct measurement. Gas transmitter Technical dataRanges: Sensor dependentPower supply: 10.5...45VDC ...