The 2151 low-profile photoelectronic detector uses a state-of-the-art optical sensing chamber. This detector is designed to provide open area protection and to be used with compatible UL listed contro
L-Series, red, wall-mountable, clear lens, 2-wire, compact footprint that fits in a single gang box, strobe marked "FIRE". Selectable strobe settings: 15, 30, 75, 95, 110, 135, and 185 cd.