The RKI AirLink T3A is a wireless gas transmitter with electrochemical, infrared, or catalytic bead sensor options. It provides both wired outputs (4-20mA analog, RS-485 Modbus) and wireless communication to RKI controllers, offering flexible integration for fixed gas detection systems.

Magnetic switches enable non-intrusive calibration and full system settings in the field. Features include graphical LCD with LED backlight, two individually configurable alarms, and front panel LED indicators (amber and red). The transmitter is approved for hazardous locations (Class I, Div 1&2, Groups B,C,D) and carries a 1-year warranty. Applications include petrochemical plants, refineries, water/wastewater treatment, and chemical plants.

The AirLink T3A combines the reliability of wired gas detection (4-20mA and Modbus) with the flexibility of wireless communication, enabling cost-effective coverage of remote or hard-to-reach locations. Its magnetic switch interface allows full calibration and configuration without opening the enclosure, preserving hazardous area integrity.