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Your cart is empty.The USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm responds quickly to fast-flaming fires to protect your family against deadly threats in the home. Perfect for new or replacement installations, the 120-volt AC hardwired alarm is suitable for houses, apartments and mobile homes. This alarm is fully interconnectable with all USI and Universal 120V alarms using existing wiring and mounting. Quick Find alarm origination identifies the first alarm to sound in an interconnected system and the single silence/test button temporarily quiets nonemergency alarms. The 9-volt alkaline battery (included) provides continuous protection in the event of a power outage. This alarm also features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket. Mount the bracket to any standard wiring junction box and use the large mounting base to cover imperfections in drywall. The plastic dust cover protects the alarm from debris and (2) tamper-resistant locks prevent unwanted alarm or battery removal. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm comes with a 10 year limited warranty. USI Electric is a subsidiary of Universal Security Instruments Inc., a U.S. based manufacturer of high quality, easy-to-install home safety products. Founded in 1969, Universal Security Instruments has nearly 50 years of heritage in providing home safety products for families. With state-of-the-art manufacturing facilities, Universal Security Instruments continues to launch revolutionary new products and technologies with the mission of always working to keep families protected.
James T. Courtney
2025-07-05 14:04:23
A little pricey, but works well. Easily installed with two screws.
Deebz
2025-06-13 18:27:03
This model (#5304) was a plug-compatible replacement for the earlier model (#5204) which meant that I did not need to rewire the units. Just unplug the older model and plug-in the new one. Very pleased about the ease of replacement.Most people are aware of the fact that detectors do not last forever. The instructional pamphlets alert users to this fact, and expiration dates are projected forward from the branded manufacture date. All detectors that I’ve used have had a post-manufacture, nominal 10-year life span. Yet, in practice it is always less. Why is this true? Because there is a lag between manufacture date and sale to customer date. This gap means that in principle a detector usually has less than a full, 10-year lifespan—which is reasonable. And a small gap is to be expected by any purchaser.My complaint has to do with the life span of the units I received. The two detectors were obtained during November 2017 and had a manufacture date of July 2016 which means that both have an effective life-span of 16-17 months less than ten years. I expect this diminished life because both of the replaced USI units stopped working within one month of their projected, 10-year lifespan. That is close!Purchasers may be expecting, incorrectly, a ten-year use beginning from the actual first day of use. It does not. Vendor transparency requires a cautionary disclaimer to notify customers that they are selling “dated†units with considerably shorter lifespans.
Bernie N
2025-06-01 18:11:38
Detectors were easy to install. My only concern is that the self-test button does not work very well. On one device, after pressing the test button several times with no response, the alarm started blaring and I could not stop it. I had to finally remove the battery to get it to stop. Three other devices I never could get the test button to work.
Fred Beam
2025-03-20 13:43:06
Just what i was looking for.
Good quality product and good price.
2025-02-18 18:26:32
Good quality product and good price.
Michelle Dolan
2025-02-16 12:59:06
I bought 2 sets of 2 and one of them was defective (set off all detectors in the house and nothing could turn them off until it was disconnected). The other three work properly and according to directions. The ceiling attachment plate had to be changed, but it was provided and easy to change.
Kern
2025-02-10 16:19:17
Seems to be good time will tell
Mike Dickinson
2024-12-08 13:35:42
Needed a replacement for our old hard-wired smoke detectors that expired. These are what we needed. Easy to install and batteries included.
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