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It is not a good choice to rely on this product for home security. I had to return the product because some of the alarms were not working.
I can just pick up the 9-volt batteries at Wallyworld. That way batteries will be much easier to manipulate when it is time to change. Fortunately, I had ordered a 50 pack of batteries for less than $6 total with FREE shipping off Amazon (from hobbytoolsupply). Also, alarms I received are different from those pictured but they ARE FirstAlert products. I had to use tweezers to remove dead batteries BUT this was even before I even stuck unit to the door. GREAT price even though I had to replace some batteries on receipt - AFTERALL, this is a discontinued product.
One had weak batteries, One had dead batteries. I will probably ALSO try the "door stop" type alarm that uses a 9-volt battery. This is a 4-pack of ALARMS. So I decide "WHY NOT USE VELCRO TO ATTACH INSTEAD OF STICKY BACK. Even with the battery hassle, I still recommend because the cost is super low. Two alarms worked great right out of pkg.
I'm glad I got these alarms but batteries are kinda frustrating to replace.
Had I paid more, I would have been more upset, however the two that work correctly are great and will definitely alert us if someone were trying to break in. The price for these four instant alarm gadgets is great. However only two of the four actually worked when I received them.
This is an easy and inexpensive way to provide some sense of security against intruders and in case my young daughter opens the door.
Works great because you can set it for alarm at night or chime in the day
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