Gentex 917-0070-002 S Series Multi-Criteria Smoke Alarm, 120VAC, 9V Battery Backup

The Gentex S-917-0070-002 is an S Series 120VAC multi-criteria photoelectric smoke alarm designed for residential and commercial sleeping accommodations. Featuring an 85 dBA Temporal 3 evacuation horn, 9V alkaline battery backup, and nominal 2.5% smoke sensitivity, the alarm provides local audible warning when smoke is detected. Its integrated self-test button, 8-hour alarm memory, front-loading battery compartment, and tandem interconnection capability support fire safety applications in apartments, hotels, dormitories, and other occupied buildings.

Gentex S-917-0070-002 120VAC Photoelectric Smoke Alarm with 9V Battery Backup

The Gentex S-917-0070-002 S Series Smoke Alarm provides early smoke detection and audible fire warning for residential dwellings, apartment buildings, hotels, motels, dormitories, and other facilities requiring single-station or multiple-station smoke alarms. Operating on 120VAC, 60Hz primary power with a 9V alkaline backup battery, the device maintains smoke detection capability during interruptions to building electrical service. Its multi-criteria photoelectric sensing technology uses light-scattering detection and electronic signal processing to identify smoke particles while helping reduce nuisance alarms. When smoke reaches the alarm threshold, the integrated 85 dBA piezoelectric horn produces a Temporal 3 evacuation signal to alert nearby occupants.

The Gentex 917-0070-002 operates at 120VAC, 60Hz with a rated operating current of 0.055A and uses a replaceable 9V alkaline battery, specified as Duracell MN1604, for standby operation. Its photoelectric sensing chamber provides a nominal smoke sensitivity of 2.5% obscuration, while the audible horn produces 85 dBA at 10 feet with a nominal frequency of 3,100Hz. The alarm operates within an ambient temperature range of 40 F to 100 F (4 C to 38 C). Its housing measures approximately 5.5 x 5.5 inches overall, with a 5.0 x 5.0-inch mounting base and 1.75-inch depth. The fully insect-screened sensing chamber helps prevent contamination, and an integrated low-battery indicator alerts occupants when battery replacement is required.

The Gentex S Series Smoke Alarm incorporates push-button self-testing, functional testing, and 8-hour alarm memory to simplify routine inspections and identify previously activated alarms. A green LED indicates AC power availability, while a red LED pulses approximately every 16 seconds during normal operation and provides alarm status indication. The device features a front-loading battery drawer, quick-disconnect wiring harness, and non-latching alarm operation that automatically restores normal status when the smoke condition clears. Compatible Gentex tandem interconnection supports up to 18 initiating devices, including a maximum of 12 S or SC Series smoke alarms, allowing interconnected devices to provide coordinated evacuation warning. The S model does not include an auxiliary relay, carbon monoxide sensor, or dedicated heat detection element.

The Gentex S-917-0070-002 is designed for wall or ceiling installation using mounting hardware compatible with standard electrical junction boxes. Its hardwired power connection, 9V battery backup, quick-disconnect harness, and tandem interconnection capability support new installations and replacement projects using compatible Gentex smoke alarm infrastructure. The alarm includes a 10-year end-of-life indicator and is ANSI/UL 217, 9th Edition listed for smoke alarm applications. Gentex provides a one-year limited warranty from the date of purchase, subject to manufacturer terms. Installation, testing, interconnection wiring, and alarm placement must follow manufacturer instructions, NFPA 72, and applicable building and fire codes. Compatibility with existing Gentex alarms and wiring harnesses must be verified before replacement.