Pay in 4 interest-free payments of $16.89 Learn more
Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
With its 4
Plain (No Lettering)
System Sensor SA-WBBC Backbox
Silent Knight SK-PULL-SA Single Action Pull Station
Rated from –40°F to 151°F
Siemens OP121 (S54372-F1-A1) Smoke Detector ELFHSR With its 4Siemens OP121(S54372 F1 A1) Photoelectric Smoke Detector Model OP121 from Siemens Fire Safety is a photoelectric smoke detector with microprocessor controlled, self diagnostic circuitry, eliminating the need for burdensome sensitivity test equipment. Model OP121 also comes with a new magnet test feature. The magnet test feature allows installers and test personnel to prove the integrity of the wiring and proper connection to the fire alarm control