D342 Family four‑wire duct smoke detector housings
- For 1 ft. (30.5cm) to 10 ft. (3 m) ducts with air velocity between 300 ft./min. to 4000 ft./min. (1.52 m/s to 20.3 m/s)
- Easy duct tube installation through the housing cuts installation time
- Detector test and reset without removing covers
- Clear cover allows quick visual inspection
- Tube filters, dust immune smoke detector, and easy disassembly for cleaning reduce maintenance time and cost
