Features:

  • Plastic
  • Imported
  • 100% New and high quality
  • Easily mounted by adhesive. Type to window or door. Ideal entry warning for homes,apartments,mobile homes,offices,hotel rooms,garages,and more！
  • Magnetic sensor switch detects your door or window.
  • Super loud 120 dB alarm. When someone opens the door or window illegally (the relative position of the primary and secondary parts changes), the alarm can issue a strong alarm, warning the intruder to leave and remind the owner
  • Super environmental suitability and stability. PROMISE: If you have any question, please contact us, we will response you in the first time. And if you are not satisfied with our products by chance, we offer you a full money back guarantee.If you do not want to receive a fake product or a poor quality product, please choose "Hiistar".
I Highly Recommend Thesr

They really work and they are loud enough to hear if someone opens your door.

Nice price

Wish it was louder , but meets the purpose

Works Great

I used this product for three entryways and windows. Word of advice stock up in batteries or get rechargeable AAA’s. When installing I would suggest turning them on , the pattern wave must match the buzzing will turn off and you know you placed it right. If you do not do this and let’s say there is a gap or ledge it will stay on and you will need to position them again. It has strong adherence if you don’t keep taking them off. Dislike the amount of batteries to run them all however I am very secure about being alarmed if a break in; the noise alone will run anyone off. . It is tricky on sliding patio doors I have yet to decide location using the side for me is impossible although after much consternation I think optimal placing would be at the top of the sliding doors. I am considering purchasing two more sets one for my son and his family, my daughter and hers. This would be an awesome loving gift of safety.

Save on electricity and safety!

I thought of buying storm and screen doors for my home because of my kids tendency to leave doors open. I may buy those eventually but these amazing... It helps notify me which doors opening and my kids quickly react to closing doors because they do not like alarm sound!! Great buy for price!

Better than what they look like

They don't look very stable but they're amazing Worked perfectly

Great product for the price.

High pitched, startling alarm. Can hear the alarm throughout the house. We used them to deter our young children from going outside without permission and it has worked perfectly, along with the hopes that it will deter someone from entering.

Cheap and work

The price is right on these little alarms. Loud enough that it would wake me. I secured some with extra packing tape because I was concerned they might fall off since they are close to windows where there is more moisture. The key is to try the alarm and side piece together before you tape them on- some require to be up a little higher to turn off the alarm. They come already with batteries and you just have to pull the tape out. I'll just buy again when the batteries wear out.

I love these things!

It took me a minute to figure out how the pieces go together. Black button on the left, magnet on the right. Then I held them in my hands with the alarm on and moved them up and down until the alarm turned off. Once I knew the placement of the magnet, I put them up against the door frame and door and moved them closer together until the alarm turned off again. Then I just stuck them right there. I put them on all my doors, sliding glass door, and windows and it was pretty quick once I got the hang of it. The alarm is plenty loud enough it would wake you up and definitely scare a burglar. My neighbor's dogs were barking like crazy as I was setting them up with the alarm on, so I think they are loud enough. They all work beautifully and I am very happy with this purchase. I am a real person and received no discount or compensation for this review.

Easy and Cost Effective

Simple way at the right cost to solve a security issue. Didn't need Tech Support

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