Siemens OP921 Photoelectric Smoke Detector

The Siemens OP921 Photoelectric Smoke Detector is a plug-in, two-wire, addressable, photoelectric smoke detector compatible for use with Siemens Model ‘H’-series devices on the same loop with Cerberus PRO fire-alarm control panels or FireFinder XLS FACPs. Programmable. Compatible with Model 8720 / DPU (device programmer / loop tester) Suitable for use in air-duct housings models FDBZ492 and FDBZ492-HR. COMPATIBLE BASES and ACCESSORIES — DB-11 Detector Mounting Base — DB-11E Detector Base, small — DB2-HR Detector Mounting Base with Relay — RL-HC Remote Alarm Indicator: 4” (10.2 cm) octag.-box mount, red — RL-HW Remote Alarm Indicator: single-gang box mount, red — FDBZ492 Addressable Air-Duct Housing — FDBZ492-HR Addressable Air-Duct Detector with Relay — LK-11 Base Locking Kit