The Honeywell Analytics IR-F9 Series refrigerant detector is a highly accurate, affordable, micro-processor based infrared sensor that will provide years of reliable service. A true 'diffusion' sensor, the IR-F9 Series does not require either the use of pumps or filters and allows all points of detection to be monitored perpetually. The versatile sensor is housed in a high mass metal bench structure that enables thermal stability and freedom from the effects of vibration.