GENTEX CORP | 917-0020-002 | 7139CS-C
7139CS/LS Series Photoelectric Smoke Alarm With Visual Signaling Appliance, 5.5 Sq Inch x 4.75 Inch Depth, 120 Volt AC, 60 Hz, 0.4 Amp

MFR PART #  917-0020-002  | 7139CS-C
PART #  235490
Minimum 1 EACH
In Stock


The smoke alarm operates on the light scattering principle, a superior method of detection in smoldering fires, utilizing a pulsing LED light source and a photodiode sensor in a fully screened sensing chamber


  • 9 Volt DC battery back-up (7109/7139CS/LS) with audible low battery chirp
  • 177 candela rating (ANSI/UL 1971 listed)
  • Horn frequency 3100 Hz
  • Patented three position test switch
  • Nominal 2.5% sensitivity
  • Quick-disconnect wiring harness (CS models)
  • Form lay contacts for remote annunciation (CS models)
  • 9 Volt DC battery back-up models, visual does not operate on battery back-up
  • Relay contacts do operate on battery back-up
  • Relay contacts will activate from the tandem wire
  • 90 dBA temporal 3 evacuation ezo horn
  • 5-to-1 signal-to-noise ratio
  • Fully insect screened
  • Tandem interconnect capabilities
  • Tandem interconnect up to 6 alarms
  • Easy Wash on-site maintenance washing program
  • Mounting hardware adapts to standard junction boxes,
  • Form C contacts

Tech Info

ANSI/UL 217 and ANSI/UL 1971 Listed, CSFM 7257-0569:118, MEA #285-91-E, NFPA 72, IBC/IFC/IRC, ISO 9001:2008


UNSPSC Code 46171600

Spec Sheet

Spec Sheet

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