Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included)

these alarms are very good and now my mother and myself can sleep at night in peace thank you very much Walmart. sincerely angel.

my next door neighbor and the two people staying at her apartment have tried to break my door knob and I am scared to death. so I can't afford cameras or a ring doorbell where I can see anything so I'm hoping by putting one of these on my door down by my door knob and one of my window in the family room and in the kitchen and in my bedroom that I'll have some sense of safety and security. being a 58 almost 59-year-old woman with disabilities my back etc I can't fight anybody off and I would rather have peace of mind then to sit here and be scared every night. I would definitely recommend these to anybody who can afford to get the fancy cameras a friend of mine had them and they definitely work the sensors go off if somebody comes near your door.

I bought these because I have a non verbal autistic child, he is an escape artist. these have alerted me multiple times to attempted escapes! essentially possibly saving my son's life. not only that! it gives peace of mind at night too! the alarm is very loud if a burger broke in the alarm is so loud it would scare them away

Rubbish product, can't show battery level, and the alarm doesn't sound continuously

I needed this product and installed it and it didn't work. I opened up four of these and only one actually made a sound and it was a very faint sound, and it was only when I put the battery in and then it didn't make any more noise after that. This is a terrible product and I do not recommend anybody wasting their money on it.

These are very, very cheaply made - even considering the relatively low price. This is the kind of device that you want to have some degree of confidence in, and these leave me with considerable doubts. In hindsight, I wish I had just accepted spending a few dollars per window - after all, these sensors will be there for years and years, you will want them to be quality/last. A few other notes - I removed one, and the double-sided tape was very difficult to remove cleanly (I'm still at it). Even VHB tape (which is very strong) would remove more cleanly. Also, for double sash windows, you want to install these where the sashes meet, so that it will alarm when EITHER sash is moved. The size of these makes that impossible, unless your windows have exceptionally thick frames (need 0.5 inch frame protruding beyond the glass pane). So as-is, you would need one sensor for each sash if you want to detect both.

Buyer Beware Most every alarm in the box I was shipped do not work. Brand New batteries I put in these and they would turn on and beep, but no alarm. Tried again with different batteries, and once again would only beep. Tried it on the other magnets from the other boxes, and still no alarm. They're going back, regardless. Junk, junk, junk.

Horrible! Cheaply made the batteries would not even stay inside kept popping out. Complete waste of $11 dollars! Had to order some more from a best selling brand!

They are junk do not waste your money. They're not worth a penny as soon as it goes off the battery flips off like comes undone so basically it does no good at all. It's worthless and stupid and dumb. Do not waste your money. I wasted $11 and some change and they're a bits and pieces if I don't have the back on it and I'm testing it to put my batteries and they don't come with batteries, so don't let them tell you I do so when I put the AAA batteries in and I go to set it and then I go to check it. If the back is not on it the whole battery pops out with the back on it it will never work again because it still pops out. It just doesn't go flying across the room. Please do not buy this. It's a waste of anything. They could not pay me to use one and don't put your safety at risk for this Thing. It's junk and I say that with a capital JUNK junk

ABSOLUTE WASTE OF MONEY!!!. I bought enough for every window and every door. put the rechargable batteries I had to buy to go in them and put them up. they worked about a week. had to recharge the batteries. put them back in and they didn't work at all. so cheaply made and will not hold up to anything.