The Air Alert Standalone Transmitter is a fixed systems gas detection transmitter for ambient air toxic gas detection applications.
It supports electrochemical, infrared, or PID sensor elements and is designed for non-hazardous area use where facilities need a standalone transmitter with local display and wired output options.
Process Controls Corporation offers the Air Alert Standalone Transmitter as part of its Gas Detection & Area Monitoring offering for industrial facilities that require fixed gas detection components for plant, utility, wastewater, chemical, and manufacturing environments.

Key Characteristics
- Electrochemical, infrared, or PID sensor element options
- 3-wire powered transmitter with 115–220 VAC power supply
- Graphical LCD with LED backlight
- 3 push-button interface with corresponding magnetic, non-intrusive switches
- 4-20 mA analog and RS-485 Modbus output options
- Optional 2 dry contact relays
- Optional 900 MHz or 2.4 GHz radio output
- Optional 3-color LED perimeter light and audible alarm
- Operating temperature range of -40°C to +70°C
- Polycarbonate enclosure rated NEMA Class I, 4, 4X, and 6; IP66, UL 508, and UL 746C (f1)
- For use in non-hazardous areas only
Ideal Applications
- Water and Wastewater Treatment: Monitors for dangerous Hydrogen Sulfide (H₂S) or Chlorine (Cl₂) to protect workers.
- Oil and Gas Refineries: Detects explosive combustible gases or Carbon Monoxide (CO) around pumps and pipes.
- Manufacturing Facilities: Uses PID sensors to monitor Volatile Organic Compounds (VOCs) near solvents and paints.
- Food & Beverage Processing: Tracks Ammonia (NH₃) around large commercial cooling systems.
Product Family Includes
- Air Alert Standalone Transmitter
- Electrochemical sensor configurations
- Infrared sensor configurations
- PID sensor configurations
- 4-20 mA analog output configuration
- RS-485 Modbus output configuration
- Optional relay configuration
- Optional LED perimeter light and audible alarm configuration
- Optional 900 MHz or 2.4 GHz radio output configuration
Industries Served
- Petrochemical Plants
- Refineries
- Water & Wastewater Treatment Plants
- Pulp & Paper Mills
- Manufacturing Facilities
- Chemical Plants
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