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  First Alert SA521CN(SA520) ONELINK Hardwired Wireless Photoelectric Smoke Alarm with Battery Backup
First Alert SA521CN(SA520) ONELINK Hardwired Wireless Photoelectric Smoke Alarm with Battery Backup


 

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Description
 
The SA521CN(SA520) is a Hardwired/Wireless/Photoelectric smoke detector. With the First Alert SA521CN(SA520) you can easily connect the alarm to a network of other smoke alarms through its wireless connection as well as the hardwiring. It works as a bridge unit to connect your existing hardwired alarms and expand with other Onleink Wireless alarms. This 120V AC system can replace any standard fire alarm that is hardwired. You can then expand on your existing hardwired network by Wireless link to any of the other Onelink Wireless Smoke or CO alarms.

SPECS:
OneLink enabled alarm
Bridge Unit - Wireless Photoelectric Hardwired Smoke Alarm
Single button test/silence
Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm
Add additional OneLink alarms and hardwired alarms. Links all alarms together for a complete system.
Hardwired interconnect and RF Interconnect: reliable and secure radio frequency communication between alarms. 915 MHz frequency with 65,000 security codes and 3 channel frequency hopping.
Optipath 360 TechnologyTM - patented technology provides 360 degrees of direct access to the smoke sensor.
Perfect Mount - allows for easy alignment of alarm
Spread Spectrum Horn Tone - Lower and varying frequency makes it easier for the elderly with normal aged related hearing loss to hear the horn.
Latching Features: Alarm Latch - remembers which unit initiated an alarm. Low Battery Latch: Visually indentifies unit in low battery condition.
10-Years Limited Warranty
Model # SA520
Weight 9.3 oz
Operating Voltage 120V AC with battery backup (Two 1.5V AA Batteries)
Humidity Range 10% to 90% relative humidity (RH)
Smoke Sensor Photoelectric
Listing ETL to UL 217 standard

Average Rating: 5 of 5 Total Reviews: 34 Write a review »

  0 of 0 people found the following review helpful:
 
Smoke Alarm June 4, 2016
Reviewer: Thomas Datz from Manchester Center, VT United States  
Great product. Easy installation.

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  0 of 0 people found the following review helpful:
 
First Alert SA521 review February 29, 2016
Reviewer: Anonymous Person from Chesapeake, VA United States  
Nice upgrade to our cheap builders grade BRK smoke detectors.  They worked on the existing hard wires connectors which saved a lot of time on installation.  The ONELINK set up for five detectors in under two minutes.  Very easy.  Already can tell fewer false alarms as our gas fireplace heat downstairs frequently set off upstairs detector.  Recommended.

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  0 of 0 people found the following review helpful:
 
First Alert SA521CN(SA520) Hardwired Wireless February 1, 2016
Reviewer: Don Dyer from Lake Jackson, TX United States  
The product was shipped promptly and there was no problems with the order.

Installation was similar to all the other First Alert Smoke detection devices.

Unfortunately the device is producing false alarms.  I'm not certain if another wireless device from outside the house is setting off the alarm or if the alarm triggers every time I print a document to my Laser printer which is in the same room.  

I would have preferred the same type of alarm with an ionization detector instead of the photoelectric detector, but that wasn't available.

Is there anyway to reduce the number of false alarms?

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  0 of 0 people found the following review helpful:
 
excellent products, great prices January 18, 2016
Reviewer: David Ashworth from Rock Hill, SC United States  
I contacted Smoke Alert based on recommendations from a friend. They were prompt and professional. They conducted a survey of potential problems and found my smoke/CO detectors were out of date. They gave me recommendations on a networked system that if one alarm went off, all alarms went off. I researched the detectors I purchased and found Smoke Alert to have the best prices anywhere (even Amazon!)
They also discovered my dryer was not vented correctly and fixed that for me. Their prices are very good.
The detectors were easy to install and easy to program.

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  0 of 0 people found the following review helpful:
 
Smoke Dectectors (First Alert) January 12, 2016
Reviewer: Ronald REIER from Maple Grove, MN, MN United States  
You'll be hearing from the Maple Grove, MN Fire Department very soon. They just left my house after installing the Smoke Detectors I purchased from you. They were very impressed with the quality and the price savings. I am sure they will be very happy to do business with you.

Thank you very much.....AND, STAY SAFE!!!


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