Conventional Detectors, Bases, and Housings

F220 Photoelectric Smoke Detectors
  • Two-wire or four-wire bases
  • 30 ft (9 m) maximum spacing between detectors
  • Optional CO-sensor, heat-sensor enhanced detection chamber
  • Clean chamber without removal or disassembly
  • CleanMe signaling capability
  • Sensitivity readout on detector
  • Detector chamber compensates for dust build-up
  • Tamper protection
  • Dual-color LED
F220‑B6 Conventional Detector Bases
  • Easy installation
  • Interchangeable detector heads
  • UL listed when used with a detector from the F220 family
D273 Photoelectric Smoke and Smoke and Heat Detectors
  • 12 VDC or 24 VDC input
  • Designed for commercial or residential use
  • Four-wire application
  • Light-emitting diodes (LEDs) indicate the status of the chamber, power, and alarm
  • Removable terminal block to simplify wiring connections
  • Cable connection point for voltmeter sensitivity test
  • Trim Plate TP280 for retrofit and remodeling purposes