Make: Bosch Model code: DS455Q Dual/ Quad Technology: Quad Technology Detectors Infra Red Beams: Yes Coverage/ Range m: Indoor: 250 / Outdoor: 160 Bosch DS455Q photoelectric detector provides an ...

For the existing photoelectric smoke detector, an infrared light source and a light-sensing photodiode are placed in opposite directions inside the detector. When particles, such as smoke ...

I replaced the original wired smoke alarms in my home with wired dual sensors that use both photoelectric and ionization technology. Because I’ve read that in-home smoke detectors should be replaced ...