System Sensor 2351B - Same Day Shipping (SEALED)The System Sensor 2351B is a Select Series intelligent (addressable) photoelectric smoke detector designed to provide point identification and analog communication with compatible fire alarm control panels. Addressing is set using onboard rotary switches, allowing precise device location assignment. The 2351B features a redesigned optical sensing chamber engineered to detect smoke from a wide range of combustion sources in accordance with UL 268 7th
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