The RKI Air Alert fixed gas detector uses electrochemical, infrared, or PID sensors for ambient air gas detection. Powered by 12 to 35 VDC (optional 115-240 VAC) with 4-20mA and RS-485 Modbus outputs. Magnetic switches enable non-intrusive calibration and diagnostics in the field.

Two versions: transmitter with 2 relays, or transmitter with alarm LEDs and buzzer (no relays). Graphical LCD with LED backlight, 3 push-button interface, 3 magnetic non-intrusive calibration switches. NEMA 4X polycarbonate enclosure IP66 rated, UL 508 and UL 746C (f1) rated. Applications include petrochemical plants, refineries, water/wastewater treatment, pulp and paper mills, manufacturing, and chemical plants.