Pay in 4 interest-free payments of $11.74 Learn more
Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Small and lightweight size allows for flexible mounting options
Fire-Lite MMF-301 Addressable Mini-Monitor Module for Class B
Bases enable quick and secure detector plug-in
Standard CD
15/30/75/95 cd
Siemens OP921 (S54320-F4-A2) Smoke Detector Sale Small and lightweight size allowsSiemens OP921 (S54320 F4 A2) Photoelectric Smoke Detector Model OP921 incorporates an optical sensor using a light scattering detection principle. The device utilizes advanced software algorithms to analyze the signals providing highly stable and accurate smoke detection. Model OP921 is UL 268 7th edition listed incorporating advanced built in ISOtechnologyTM True Class X SLC operation (use is optional), greatly improving system reliability and