System Sensor 3251 Low-Profile Intelligent Combination Smoke Detector

The System Sensor model 3251 Omni Sensor is an addressable, low-profile intelligent plug-in combination photoelectronic, ionization, and thermal (135F fixed temp) detector. COMPATIBLE BASES and ACCESSORIES: — B210LP Flanged adapter base — B501 Flangeless adapter base — B501BH Sounder base, includes B501 adapter base — B224RB Relay adapter base (6.1″ diameter) provides Form C contact for control of auxiliary functions — B224BI Isolator adapter base (6.1″ diameter) provides isolation of short circuits — F110 Retrofit replacement flange for B501B base — RA400Z Remote LED annunciator 3 — 32 VDC; fits U.S. single gang electrical box — M02-04-01 Test magnet