Air Alert – Standalone Transmitter


The RKI Air Alert series ambient air toxic gas detector is a versatile assembly that uses an electrochemical, infrared or PID sensor element to detect a variety of gases. Wire powered (12 to 35 VDC) with 4-20 mA analog and RS-485 Modbus outputs. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.

The Air Alert represents the latest leading edge technology in fixed gas detection today.


Electrochemical, Infrared, or PID sensor element
Wire powered (3-wire), 12-35 VDC operating voltage, optional AC power supply
Operating temperature range of -40°C to +70°C
3 Push-button interface (ADD, MENU, SUB) with 3 corresponding magnetic, non-intrusive switches
2 Dry contact relays (optional)
Graphical LCD with LED backlight
Output options: 4-20mA (3-wire) analog, RS-485 Modbus, optional 900 MHz or 2.4 GHz radio
Optional 3 color LED perimeter and audible alarm
1-Year warranty


Petrochemical plants
Water & wastewater treatment plants
Pulp & paper mills
Manufacturing facilities
Chemical plants



General Specifications

Product Specifications
Sensor TypeElectrochemical, infrared, PID
Operating VoltageWire powered (2-wire) 12 to 35 VDC (Optional AC power supply)
Power Draw2 Watts maximum
Protection• Power electromagnetic interference (EMI) filter • 4-20 mA surge suppression • RS-485 surge suppression
Display Screen102 x 64 Resolution graphical LCD screen transflective (sunlight readable) with white LED backlight
Interface3 Push-buttons (MENU, ADD and SUB) 3 Magnetic non-intrusive switches for calibration (MENU, ADD and SUB)
Customizable Settings2 Individually configurable relay set-points
Product add-on Hardware3 Color LED Perimeter Lights and audible alarm, optional. (this option not available with relay option)
Temperature Range-40°C to +70°C
Digital OutputRS-485 modbus Optional 900 MHz or 2.4 GHz radio wireless output
Wired (Analog) Output4-20 mA (3-wire) fault terminal
Product Dimensions5 in. L x 5 in. W x 5 in. H
Total Weight5 lbs.
Enclosure MaterialNEMA Class I, 4, 4X, and 6 polycarbonate enclosure with clear window – IP 66, UL 508 and UL 746C (f1) rated
ConstructionFor use in non hazardous areas only
ControllersCompatible with AirLink 7010, AirLink 7032, Beacon 110, Beacon 200, Beacon 410A, and Beacon 800
Harware Warranty1-Year warranty for electronics and sensor

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