TECKNET Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS)

I have these on every door and window in my house. Work great, just remember to turn them off in the morning when you get up. Easy to install and the volume is heard all the way at the back of my garden and possibly more. Stick great to the door

Very effective and value for money. Easy to setup too. I have installed 3 one the front door so I know who is coming and out I run a childcare business. One on French doors leading to the garden it startle the little when they try to access the garden without me. And one on the garden gate to for teenagers keep losing their house key and wanting the gate unlocked to sneak in not thinking of risks to little ones using an unlocked garden . Sadly British constant rain stopped it from sticking to the wooden gate it needs waterproof adhesive to be effective for outdoors.

These are brilliant. Easy to install and gives me peace of mind at night. I've recommended to friends too

Great alarms, easy to install and great value for money. Alarm/chime volume is perfect and can be easily adjusted. Forgot I'd put them on the doors last night and nearly deafened myself this morning when trying to leave for work so they definitely work!

These window alarms work well and are very easy to set up. For anyone looking for extra security these are a good buy.

After noticing damage to my door someone’s done trying to break into my flat last night, I ordered this. Very easy to set up and as it’s adhesive, no damage will be done to the door which is great to know as I rent. You can turn it off which is great so you know you can have full control over when it is on. It’s more than loud enough to alert you and to scare off anyone if they were to break in even on the lowest setting which is what I have mine on in this video. It comes in a pack of 3 which is nice incase one breaks or the adhesive strips lose their stickiness. Whether you’re in a flat like me or a house and want to feel that extra bit of security for whatever reason, these seem like a good and cheap choice.

Excellent value. Comes ready to install, no faffing around with apps and batteries. I do recommend planning first how you’re going to place the parts on the window as I ended up having to put my sensor “sideways” rather than using the strip placement intended at the back. Very loud, plenty loud enough to put off any potential burglar.

These TECKNET (3 pack of) Alarm Sensors are alright & in certain situations would certainly deter or slow down a filthy thief I guess it depends on how qualified a thief they are? If they've got a couple of screwdrivers, pliers or a small crowbar they're not new to theft so they'll know to just rip one of these off or to simply turn it off as it's not loud enough to wake the neighbours really & that's say on a row of council owned terraced houses & the thief would've known that the house, flat whatever was empty as they're extremely good at being extremely bad these scumbags. (plus I don't believe that these are 100db loud anyway ?!?!). I got one for the gentle ring of the backdoor being opened & closed, they're very easy to set up, you just pull out the battery tab find a position for them to go & apply the adhesive strip on to the alarm & apply to your chosen area for the alarm whilst applying firm & even pressure for a few minutes (say 5) so it'll hold well (the same with the smaller part of the alarm). Now I had two spare so I put one on a door upstairs & then decided to put the third from the pack very closely next to the second one making it ~Stereo~ with the two going off together from two different sources, it's louder it'd take just that little longer to disarm them & it weren't a waste of an alarm! Try it, place two close together like in the photo that I've provided or on separate sides of the door, window that you're securing, you'll hear that it's louder & would be more shocking to a burglar if there were alarms sounding from different sources/areas in sync again making them louder & taking longer to disarm that's if the thief/thieves haven't scarped already as it will be confusing & when you're confused with fear you're natural response is to remove yourself from the situation (especially if you bring the long arm of the law into the mix!).

Vienen muy bien envueltos, funcionan a la perfección, tiene 2 reguladores, uno de intensidad del sonido y otro para elegir el tipo de sonido (alarma, aviso o apagado). Viene con cinta de doble cara para pegarlo. En marco de ventana o puerta blanco, se disimula bastante bien y no queda feo ni destaca.

Ottimissimo rapporto qualità prezzo sirena rumorossisima c'è anche la modalità suono singolo per avvisare dell'apertura senza fare partire un allarme continua e la batteria mi sta durando 5 e passa mesi non si è ancora scaricata contando che sono batterie super economiche che si possono trovare in un negozio qualsiasi vicino casa.

Alarm ist sehr laut - Lautstärke kann geregelt werden. Wir sind sehr zufrieden

Très bien, bonne qualité, l alarme est très puissante.je recommande vivement

Ich schreibe ja selten etwas ,aber hier muss ich mal was zu sagen ,diese Tür Alarmanlagen sind mega funktionieren einwandfrei und sind richtig laut. Unser Keller ist freistehend und habe jetzt die Alarmanlagen an die Kellertüren angebracht weil unser Schlafzimmer ganz oben im Haus ist jetzt bekomme ich auch mit, sollte mal jemand rein wollen. Kann ich auf jeden Fall weiterempfehlen