Doberman Security Slim Window Alarm, Loud 100dB Alarm and Vibration Sensors, Modern & Ultra-Thin, Design Compatible with Home, Office, Dorm Room or Even RV (4 Pack)

These little alarms are just what I wanted to place on my patio doors to alert me to anyone trying to enter my house. They are not set off my someone simply jiggling the door handle but go off if the glass is banged or the door is opened and are really loud. I love how the alarms have a warning sticker which can be seen from the outside to act as an additional deterrent to anyone thinking of breaking in. For £5 each they are perfect for what I wanted then for.

Ordered these when they were temporarily out of stock, however, they kept their word and soon delivered them. These alarms are approx. 7cms, just under 3 inches, in diameter so they're fairly inobtrusive. They're easy to stick on to the window and the sticky really holds them firm. Mine have been up for a couple of months now nd holding very firmly. They're very sensitive to movement, even to the point that when my border collie does one of her high pitched yaps it can sometimes set the alarm off as it must rattle the window pane alittle. They're easy to turn off via the little switch on the front. I've got a flat room so have them positioned on the windows just above the roof. I feel so much safer now they're installed as I know they will go off if the windows are tampered with. They're really loud and would definitely wake you if they went off during the night. Overall, I'm very pleased with my purchase as they have been a cheap solution to my security problem. I would definitely recommend these.

I was not totally sure what to expect of these but I would agree with some of the other reviewers. These are so simple to install. Simply peel off of the backing and stick on. I did clean my window thoroughly first to make sure they stuck. I like the red warning logo that is the sticky pad - anyone looking from the outside can be left in no doubt what these are. However I fitted one to the glass panel of my front door and tested it. Oddly if you touch the glass panel directly on the outside of where the alarm is mounted it sounds and it is loud...certainly would deter any chancers. But when I opened the door with the door chain on even the motion of the chain abruptly stopping the door the unit did not sound. I needed several attempts to get it work. It seems location is very key here. Sensitivity of the alarm has been mentioned before but I was surprised that touching the glass panel immediately behind the alarm set it off but banging the door open against the door chain did not. I will of course leave it on but I would suggest it is perhaps best for glass panels on conservatories or vulnerable window glass.

Can't fault these for the price. Sensitivity is spot on, placed on one patio door and even when the other door is hit/banged/kicked it activates and is loud (especially indoors, although the sound from the outside is also loud enough to make a potential intruder turn and run I suspect) Super easy to install, just peel off the back and stick to a cleaned window pane/frame. Sticker on the outside draws attention to the alarm's presence. Accompanied by a motion-sensor security light, these make me feel safe and secure in times when burglary seems to be on the rise. Pound coin on photo for size comparison. Can't comment on battery life as I've only had them a few days and only switch them on at night or when the house is empty.

I live alone and, in the front bedroom I cannot hear what's going on at the rear of the house. I have attached one to my back door, one to the sliding kitchen door and one to the dining room window. Since doing so I have slept much better knowing I will be woken by intruders. They're loud and the shrill pitch would definitely wake me, and scare off anyone trying to come in. A really cheap and effective alarm. A simple peel and stick. Would recommend.

I got four of these on all my downstairs windows, easy to fix to the windows and feels really secure, I don’t think it will be falling of anytime soon. Tested it out from the outside by knocking on the windows and it works really well. I can’t comment on the battery life as I just got them recently. I would definitely recommend them.

These are much smarter than the old ones we had. After reading other reviews I didn't expect these to be quite so sensitive but they go off very loudly at the slightest touch and our cats vanish. The stickers with the dog on are separate to the alarm, this makes for a strange installation as alignment through double glazing is very hard. They are easy to fit, stick really well and do feel good quality. The on-off switch is awkward to use if you don't have the right shaped finger nails.

These are great. Stick them in a window, turn in and will beep and flash a couple of times and that’s it, it’s set. Goes off quite loud with just a gentle movement of the window.

suono molto forte e si adatta ad ogni tipo di finestra direi ottimo prodotto

Bon

Muito bom

Alarme qui fonctionne bien pour les vitres du camping car. J ai eu un problème de quantité dans le premier Envoi (amazon m a remboursé), donc j en recommande car vraiment très bon système pour mon véhicule de voyage Deuxième réception, impeccable

Praktisch für Dachfenster, Kellerfenster usw. Leicht zu montieren. Machen ordentlich Lärm. Ein-und ausschaltbar.