The 7139 for wall mount is a single station smoke alarm designed to give reliable early warning of the presence of smoke where both audible and visual alarms are required. This model is AC powered so an electrician is not required for installation.

The smoke alarm operates on the light scattering principle, a superior method of detection in smoldering fires. It has a pulsing LED light source and a photodiode sensor in a fully screened sensing chamber. When smoke enters the chamber, the infrared beam is deflected onto the sensor. The LED rate increases to 8 times the normal pulse rate, and after the photodiode confirms the presence of smoke for 2 consecutive pulses, it will produce the signal necessary to trip the audible and strobe light alarms.

hearing & hearables

Gentex 7139LS Smoke Detector With 9ft Line Cord

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SKU: 1011
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  • 7139CS and 7139LS are available in 120VAC with 9V battery back-up
  • LS models feature a 9 foot line cord
  • Battery back-up units feature a low or missing battery indicator
  • Battery back-up units include 9V battery shipped with unit
  • Visual strobe is ADA compliant 177 candela rated to ANSI/UL 1971
  • Horn frequency 3100Hz
  • 7139 models feature a 90 decibel temporal 3 evacuation audible alarm
  • CS models have tandem interconnect capabilities
  • CS models feature Form C relay contacts for remote annunciation
  • Patented, three-position test switch
  • Nominal 2.5% sensitivity
  • 5 to 1 signal-to-noise ratio
  • Pulsing LED sensing chamber
  • Fully insect screened
  • Solid state LED condition indicator
  • Quick-disconnect wiring harness
  • Non-latching (self restoring)
  • Mounting hardware adapts to standard junction boxes
  • On-site maintenance washing program

Additional information

Weight 32 oz

If your hearing loss is severe, make sure you can hear the environmental warning sounds in your environment.

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