Fosmon Wireless Entry (4 Pack), Alert Alarm Safety System (2 Function 90db Chime) Burglar Security Sensor for Door, Window, Home, Business, Garage

Excellent product. Like the fact they don’t need to touch as that makes it possible to use on shaped double glazing. Very loud - would definitely make an intruder think twice & attract attention. Good sticky backs & 2 seconds to install as no tools needed. Come with batteries to. I like feeling secure when alone and confident I’d hear if they went off. Highly recommend.

Would buy again

For me these were no good, and only worked when the magnet is positioned on the right side of the sensor which was no good on some of my doors. They are cheaply made, the plastic is quite thin and flimsy. Although easy to install and a good noise level, the switch on the side can easily be turned off by any intruder. Also the chime tone on these would eventually do my head in, but on the other hand be good if you want to know when the door/ window as been opened, a good safety deterrent for children. I returned these only because they were no good for me and decided to purchase an alarm system instead.

Cheap plastic but good loud noise. Perfect for front door.

Bought these to give peace of mind to my mum who lives alone they are very noisy and brilliant can’t recommend them enough and cheap as chips

the double sided tape loses grip within weeks

Very easy to install on any surface. Very loud also. Value for money. Highly recommended

Good product and the alarm is loud. I did find that the product didn't stay stuck down properly, had to find an alternative solution

Great and loud

These do not have the arrow indicator on the main part of the device as shown. They will literally alarm no matter where you place the magnetic piece. They are all useless.

It gets stuck sometimes won’t stop ringing sometimes won’t ring you have to match it up 100% but not bad for the price

I like this product alot very loud work really well but window small u may need to put upside down iam very happy with my purchase

This is a little alarm works very well however it was hard to figure out how to get it to working. It is pretty loud. I haven't figured out whether that's a plus or negative yet. LOL