First Alert

Model # SA720CN

Internet # 202433889

Battery Operated Photoelectric Smoke Alarm with Escape Light

This item has been discontinued.
The Home Depot no longer carries this specific product.

  • Escape light activates with alarm to illuminate a path to safety
  • Photoelectric smoke sensing technology
  • Batteries Included



Model # SA720CN

Internet # 202433889

The First Alert SA720CN battery operated photoelectric smoke alarm boasts a bright escape light that illuminates a path to safety when alarm sounds. This is extremely useful when dealing with smoldering fires that can fill the home with thick smoke. The escape light helps to brightly illuminate a path to safety. The photoelectric sensor is ideal for detecting these slow burning fires and helps reduce unnecessary alarms from cooking smoke or shower steam. A single button tests the detectors functions and silences nuisance alarms. The SA720CN alarm provides an easy access drawer for the battery with no need to remove it from the ceiling, which makes it ideal for all locations. 10-year limited warranty. Meets UL standards.

  • Bright escape light illuminates a path to safety as quickly as possible
  • Photoelectric smoke sensor reduces nuisance alarms caused from cooking smoke or shower steam
  • Test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality
  • EZ access battery door allows you to change the batteries without having to remove the alarm from the wall or ceiling
  • 9-Volt battery included
  • 10-year limited warranty
  • Meets UL217 standards for smoke alarms
  • America's most trusted brand in home safety
  • Loud 85 dB alarm

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Alarm Sensor Type 
Alarm Type 
Alarm/Detector Features 
Escape Light 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
Power Source 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 


Alarm Sensor Type: Photoelectric
Alarm/Detector Features: Escape Light
Brand: First Alert
Power Source: Battery
Review Rating: 3 & Up
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Rated 3.8 out of 5 by 4 reviewers.
Rated 3.0 out of 5.0 by Works okay for a couple of years We got this smoke detector about 2 years ago. It works the same as any other detector (alarm goes off while we are cooking). However, it malfunctioned today and will have to be replaced. It started beeping as if the battery was low, but I have replaced the battery with 4 other batteries (3 brand new from different packages and manufacturers, and one from another smoke detector in the house that is functioning fine) and it continues to make the same beep. The little red light flashes, as if it is working properly, but when I try to test it, neither the alarm or escape light will work and then the red light stays on. There is no dust build up. I even wiped off the metal prongs to make sure there was nothing preventing a good connection with the battery. This replaced a 20 year old detector that still worked fine, I just wanted one with an escape light. Very disappointed to have it malfunction after 2 years. April 1, 2015
Rated 5.0 out of 5.0 by I'm so impressed! I'm so impressed with the product. It's not flimsy! In fact the price I think it's reasonable, I've actually seen it work and I would definitely buy more when the time comes. I recommend it because it's not just a smoke detector it's also an electrical detector. This is actually with the fire marshals recommend that homes have instead of just smoke detectors I did my research. April 24, 2013
Rated 3.0 out of 5.0 by closest I could find for hearing impaired was looking for a battery powered photoelectric smoke detector with strobe for hearing impaired tenant, but couldn't find after web search-this only has a small light that turns on with the alarm, but doesn't flash; we'll see if useful/effective May 14, 2011
Rated 4.0 out of 5.0 by Good Value Great for the kitchen. Stopped the false alarms from cooking. Good value for the price. March 5, 2013
  • 2016-05-28 T15:04:25.119-05:00
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