Defender Ultra Slim Window Alarm 2 Pack, 130dB Vibration Sensor, Glass Break & Window Smash Detection, Loud Security Siren, Police Accredited, Gold Sold Secure

I only got it today and stuck them on the bottom right of the downstairs window glass and gave it a few knocks and boom, the alarms went off. Imagine how quickly it would go if a hard object were to hit the glass! So far, so good. And I like how it has the warning sticker to alert intruders. Great product and easy to use, not to mention the slim design and great adhesive. Not expensive and well packaged. Sensitivity is great as the goal is to be alerted for break in or broken glass, not tapping on the glass.

Purchased for front/ back door alarm protection after attempted kicking/ break in whilst asleep at night. Excellent value, quality, noise level, functionality & easy to install, much smaller than I was expecting, which gives the user a wide variety of fixing areas, plus this product is Police approved!

Loud, slimline, easy to turn on and off. However, both can go off randomly, which is a shock of it happens in your bedroom in the middle of the night!! If this keeps happening, I will contact the seller, as my brother had the same.issue and needed replacements. All in all, good value, a helpful security deterrent and they adhere well to windows.

good little gadjet any movement on the door and it sets alarm off. feel safer at night .

These dont work well at all. They require more impact to be triggered.

They easily stick onto glass windows and doors. They have a loud siren but we’ve only tested them, thankfully not had them put to use. They are just another deterrent which create a lot of noise but were recommended by our local neighbour hood watch team.

Compact, warning stickers are not stuck aligned so look rubbish from outside. They work but I would like if they were more sensitive so alarm triggers sooner

Two packets came I thought there were only two alarms. Must have misread it. They look decent enough and are mounted on the shed windows. They are quite sticky and I cleaned the glass first...makes sense. I like the warning on the outer face. Seeing they have a police approval I decided to give them a go. I hope I never hear them.

sono molto utili trasmettono sicurezza

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