The Gentex GHSLF177R is a 24 VDC low-frequency horn/strobe from the Gentex GHSLF Series. It combines a 520 Hz square-wave horn in Temporal 3 with a fixed 177 candela strobe. As a result, it satisfies both the NFPA 72 sleeping-area audibility requirement and ADA visible notification requirements. Furthermore, the GHSLF177R ships with a red faceplate and plain (no lettering) bezel.
Gentex GHSLF177R Specifications
The GHSLF177R operates at 24 VDC nominal. In addition, it accepts an input voltage range of 16–33 V on filtered DC or full-wave-rectified power. Also, the strobe maintains a 1–2 Hz flash rate regardless of input voltage. Furthermore, the horn carries a jumper selection for either NORMAL or LOUD decibel output.
Per the Gentex datasheet, minimum SPL at 10 ft (reverberant room, UL 464) is 76.3 dBA NORMAL / 78.8 dBA LOUD in Temporal 3 520 Hz. Also, Temporal 4 520 Hz (when used with the GTSM module) is 80.6 dBA NORMAL / 82.0 dBA LOUD. Operating current at 24 VDC nominal for 177 cd in Temporal 3 is 268 mA NORMAL / 293 mA LOUD. In Temporal 4, current is 337 mA NORMAL / 391 mA LOUD.
Listings and Standards
This Gentex GHSLF Series horn/strobe carries the manufacturer-published listings below:
- ANSI/UL 1971 Listed (strobe, signaling for the hearing impaired)
- ANSI/UL 464 Listed (audible signal appliance)
- CAN/ULC S525 and CAN/ULC S526 Listed
- CSFM 7135-0569:0148
- NFPA 72, IBC/IFC/IRC, and ADA compliant
Installation Notes for Gentex GHSLF177R
First, the 520 Hz low-frequency tone is intended for sleeping-area audibility per NFPA 72 Chapter 18. Therefore, the GHSLF177R is well-suited to hotels, dormitories, and other Group R occupancies. Then, 177 cd is the highest fixed-output option in the GHSLF Series and the highest standard fire-alarm candela rating per UL 1971. As a result, this output suits large open spaces, high-ceiling areas, and the corridor/lobby zones called out in NFPA 72 18.5 spacing tables. In addition, the unit ships with the Gentex Super-Slide® mounting bracket and accepts 12–18 AWG wire. Also, plan NAC current budgets carefully — at 268 mA NORMAL the 177 cd setting draws roughly 2.4× the 110 cd current. Furthermore, Temporal 4 pattern requires the Gentex GTSM Synchronization Control Module. However, the GHSLF177R is not listed for outdoor use, and operating temperature is 32°–120°F (0°–49°C). Unit dimensions are 6-1/2″ H × 5-1/2″ W × 2″ D.
Order Gentex GHSLF177R from Life Safety Consultants
Life Safety Consultants stocks Gentex GHSLF low-frequency horn/strobes for commercial installers. To order, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.25 lbs |
|---|---|
| Dimensions | 5.5 × 2.56 × 6.56 in |
| Condition | New |
| Manufacturers | Life Safety |
| Part Type | Horn / Strobe |
