The AirScan IR-F9 is an infrared diffusion design sensor that allows all points of detection to be monitored simultaneously. The IR-F9 responds to refrigerants in the range of 0-3,000 ppm and features SensorCheck technology that continually monitors sensor performance. The IR-F9 is available in an aluminum or stainless Enclosure, with our without ATMOS technology. ATMOS technology allows for operation in environments with temperatures as low as -60°F/-50°C (super heat).