TECKNET Door Alarm Sensor, Window Alarm Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor Alarm for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (6 PCS)

Replacement batteries are quite expensive if you have to replace multiples at the same time, but if your house alarm is off when you are in during the day, these little gadgets are brilliant at providing peace of mind. Loud siren when on that setting, audible all over the house and even in the garden. I keep the 'pulse' setting on my front porch door during the day as so few delivery drivers bother to knock, post covid, just leaving parcels visible in the porch, and it alerts me to the fact there has been a delivery. With the self adhesive pads they are quick and easy to fit wherever you need them. For battery replacement the 'unit' slides out of the housing and slides back in simply with no fuss.

The media could not be loaded. Have a son with autism.Likes to walk around the house at 4 in the morning, worst thing is going into the bathroom and turning the taps on.Tried everything baby proof items nothing worked.So got one for the bathroom and one for the bedroom making different sounds.This helps me as will alert me when his awake to get him back to bed as well as warm me his going in the bathroom.Product works well

Work well fitted three within 10 minutes only gripe is the chime is not a Ding Dong but more like a cat getting his throat cut

These are very good,was worried that the heat would bring them off but no still there.

Very effective with different sound levels and types. Easy to install with clear instructions.

I always got very scared when my parents would go away and I was left alone in the house. I bought the 3 pack of these alarms on the off chance it would make me feel more secure and it without a doubt did the job perfectly. I know they wouldn't stop someone for entering but the loudness of them will sure give you the time to call 999 and either hide or find something to protect yourself. I couldn't rave about these anymore. Well worth the small price tag they come with!

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!).

Great alarms which are fitted in a few seconds to doors and windows vary loud but can be adjusted to a lower volume