Gentex SR220 120V Red Fire Alarm Strobe

The Gentex SR220 (917-0076-002) is a 220VAC multi-criteria photoelectric smoke alarm with auxiliary relay contacts for single-station or interconnected fire warning applications. Featuring 220VAC, 50/60 Hz primary power, 9V alkaline battery backup, and one Form A and one Form C relay contact, the alarm supports local audible notification and remote signaling. Its 85 dBA horn produces a Temporal 3 evacuation signal, while Gentex DUALINK technology enables interconnection with compatible alarms. The SR220 is ANSI/UL 217, 9th Edition listed.

Gentex SR220 917-0076-002 220VAC Photoelectric Smoke Alarm with Relay

The Gentex SR220 (917-0076-002) Multi-Criteria Smoke Alarm is a hardwired fire detection and occupant warning device designed for residential and commercial dwelling-unit applications, including apartments, hotels, motels, and residential occupancies within healthcare facilities. Part of the Gentex S Series, the SR220 incorporates multi-criteria smoke sensing with photoelectric light-scattering technology to detect smoke associated with fire conditions. When activated, the alarm produces a Temporal 3 audible evacuation pattern through its integrated piezoelectric horn. Unlike the standard S220 model, the SR220 includes auxiliary relay contacts for interfacing with compatible remote annunciation and monitoring equipment.

The SR220 operates on 220VAC, 50/60 Hz primary power with a rated operating current of 0.135 amperes. A replaceable 9V Duracell MN1604 alkaline battery maintains alarm operation during AC power interruptions, providing at least 24 hours of backup operation under the manufacturer's specified conditions. The smoke sensing chamber features a nominal sensitivity of 2.5% obscuration, while the integrated piezoelectric horn produces at least 85 dBA at 10 feet with a nominal frequency of 3,100 Hz. Its auxiliary outputs include one Form A and one Form C relay contact for compatible external signaling devices. Additional features include programmable relay operation, an 8-hour alarm memory, push-button self-testing, and a 10-year end-of-life indicator.

The Gentex SR220 smoke alarm supports single-station installation and multiple-station interconnection through the manufacturer's DUALINK tandem interconnection technology. Compatible Gentex smoke, heat, carbon monoxide, and combination smoke/CO alarms can communicate alarm conditions throughout an interconnected system. When the SR220 detects smoke, interconnected compatible devices produce the Temporal 3 smoke warning; compatible interconnected CO alarms can also trigger the appropriate Temporal 4 carbon monoxide warning. The SR220 supports interconnection with specified Gentex S, SR, S220, SR220, STRR, SHRR, H, H220, C, CR, SC, SCR, and SCRR models, along with designated GN-503, CO1209, and S1209 Series alarms. The SR220 detects smoke only and does not incorporate a dedicated carbon monoxide or heat sensor.

Designed for indoor wall or ceiling installation, the Gentex SR220 917-0076-002 measures 5.5 inches across and 1.75 inches deep, with a 5-inch mounting base compatible with standard electrical junction boxes. Its quick-disconnect wiring harness simplifies installation and servicing, while the front-loading battery drawer permits battery replacement without removing the alarm from its mounting location. A green LED indicates AC power, and a red LED provides operating-status indication. The fully screened sensing chamber reduces insect intrusion, and the supplied dust cover protects the alarm during construction. Operating within an ambient temperature range of 40 F to 100 F (4 C to 38 C), the SR220 is ANSI/UL 217, 9th Edition listed and carries a one-year limited manufacturer warranty. Installation and maintenance must follow Gentex instructions and applicable fire and life-safety codes.