System Sensor D4120 Detector Freon Verify with the manufacturer’s specifications

Verify with the manufacturer’s specifications to ensure a secure mechanical connection

For technicians performing field service or rebuilds

Frequent tripping of the 626446R limit switch is usually caused by restricted airflow

the unit features an integrated sun shield

System Sensor D4120 Detector Freon Verify with the manufacturer’s specificationsThe System Sensor D4120 is an industrial grade 4 wire photoelectric duct smoke detector designed for high performance smoke detection in HVAC air handling systems. This InnovairFlex duct smoke detector operates across a wide air velocity range of 100 to 4,000 feet per minute, making it suitable for both low flow and high volume applications. It features a versatile pivoting housing that accommodates square or rectangular footprints and mounts easily