The RKI M2A-XL gas transmitter operates as a stand-alone gas monitor or as part of an integrated system. It connects to any controller, PLC, or DCS with analog or digital signal. Non-intrusive calibration using a magnetic wand eliminates the need to open the housing and declassify the area for routine maintenance. Automatic zero drift correction compensates for aging sensors and ensures stable readings.

The M2A-XL supports a wide range of gases, including LEL combustibles, O2, H2S, CO, CO2, 100% vol CH4, and many toxic gases (NH3, SO2, PH3, AsH3, HCN). Sensor construction is rated Class I, Div 1 Groups B, C, D for flammables, CO, H2S, O2, and CO2, and Class I, Div 2 for other toxics. The transmitter offers 4-20 mA and digital Modbus outputs, two fully programmable alarm relays, and a fail relay. It is available in direct or remote mount configurations, with a water-repellent sensor cover.