Mircom MIX-3100 SF 03/03 They are designed for use

They are designed for use with commercial fire protective signaling systems and household fire warning systems (see NFPA 72)

as well as fast flaming fires

The Edwards EST 202-8A-TW is a white Strobe (110 candela) for wall mounting

Teryx 750 LE 4X4 2008-2013

When smoke enters the chamber a fraction of the collimated light is scattered onto the photo-diode

Mircom MIX-3100 SF 03/03 They are designed for useIntelligent Photoelectric Smoke Detector (MIX 3100). The Intelligent photoelectric smoke sensor utilizes a unique optical sensing chamber that is designed to sense smoke produced by a wide range of combustion sources. The photoelectric detector is equipped with a clear LED which flashes when the detector is polled and turns on steady when the detector goes into alarm.