Bosch F220-PTH Photoelectric Smoke Detector

Photo Smoke W/Thermistor. The F220-PTH Photoelectric Smoke Detector is UL Listed, open-area photoelectric smoke detector. Use them with commercial fire protective signaling systems and household fire warning systems (see NFPA 72, the National Fire Alarm Code). This smoke detector scatter light using a pulsed infrared source operating with a gated, high-speed, photodiode infrared sensor. The symmetry of the optical chamber allows 360° uniform smoke entry, but minimizes external light entry. The detector use low current electronic circuitry, so they can connect to 12 VDC nominal or 24 VDC nominal power source circuits.

• 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