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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
With clear spacer
and 185 Cd
It is designed for system operation and is fully listed to UL 2075
Intended for use with Simplex systems and accessories
Simplex 565-473 Class B (0565-473)
Siemens OP921 (S54320-F4-A2) Smoke Detector Sale With clear spacerSiemens 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
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