The Sensepoint XCL 4-20mA Bluetooth has been designed to meet the needs of commercial and light industrial applications as a fixed gas leak detection system. It is available in two Colours (Black & White). This Sensor is available for the following gases: Carbon Monoxide, Carbon Dioxide, Nitrogen Dioxide, Hydrogen Sulphide, Hydrogen, Oxygen, Methane, Ammonia, and Propane.