The SD-100 Series consists of conventional photoelectric smoke detectors engineered for reliable early fire detection across commercial, industrial, institutional, and residential facilities. Utilizing advanced detection algorithms and a durable sensor head, the series features a low-profile design that blends into surrounding architectural finishes. The SD-100-2WP-4K configuration supplies a two-wire photoelectric detector head equipped with a remote LED output terminal, pre-packaged complete with a 4-inch mounting base for straightforward field installation on conventional fire alarm initiating circuits.