Door Alarms When Opened 4 Pack, New Version with Two Volume Levels, NOOPEL Window Alarm Sensors for Kids Safety Burglar Intruder Entry Alert, DIY Home Security, Battery Operated

This is a great product that is easy to install and operate.I was concerned after reading several reviews that the alarm and sensor would need to be mounted very close to each other to achieve proper operation. After a bit of hand testing I found that gaps of one-half inch would keep the alarm from going off. In one of my installations the alarm unit and sensor are no even parallel to each other with no adverse affects to performance. Would like to upload some pictures of my install, but either Amazon or the seller seem to have this disabled.The unit is easy to use with the three position micro-switch; High, Off and Low. The only comment I would have is that because it is a micro-switch people with limited dexterity might find it difficult to use.I did not evaluate battery life because, frankly, I cannot imagine listening to this thing go off on high for anything more than a few seconds.

I love this door alarm! Its easy to install & loud. OMG 😲 it's loud! It's just what I was looking for. Mom is 88 & got out once which is 1 time too many. This alarm will scare the s**t out of you. It's awesome!

Although these arent the most appealing with how shiny silver they are. The loud setting is actually quite loud and is what I was looking for when I am gaming or playing music.

I have one on my back and front door. There is a switch on the side to turn them off or adjust the volume. I keep mine on the lower setting when being used. We have a pool and young children so this provides extra security. Setup is quick and easy. Simply peal and stick. Mine have been up for 4 months and still work perfectly. They were recommended to me by someone who also has them.

These are super loud and easy to install. We have put them on doors and windows. The one on the front door fell off a couple of times, but hasn't fallen in a couple of weeks. We had to install it the opposite way to get in on the door, so maybe that's why? The other three have yet to fall. Overall good buy.

I am a fan of Noopel alarms - far superior to my previously purchased Sabres & GEs.Just purchased this "new" version and am returning to rebuy another set of the "old" version (black base). The new version Noopel has a third switch position for "low" - whereas the "old" version was a simple 2 position switch - up for on & down for off = no mistakes.The Sabres, GEs and other brands also have 3 position switches with "off" in the middle. Meaning you have to guess and check to see if you switched to "off" versus low. Since the switch is TINY and facing to the side where you can't see the switch position label - I found the 3 position style mistake prone.The new Noopel is different from my Sabres & GEs whereas they both employed a "chime" as 2nd alert setting while Noople has a high & low, The high remains great, it gets your attention far better than my Sabres or GEs. But the "low" setting is without value as being so low as to be nearly useless.Another fact to note if you are shopping - my old version Noopels gave me MUCH better battery life than Sabre or GE. Also Noopel only requires 3 LR44s rather than 4 with my others. Simpler because the LR44s are small, round, and hard to handle with guy hands often ending up rolling on the floor. Saves hassle.So I am rebuying the "old" version & sending back the "new". Either are better than Sabre or GE IMO.

We use these for vacations when we rent airbnbs. Can’t be too careful! It works well and is super loud. My only wish is that the smaller magnet was even slimmer but that’s just my preference. Other than that, works great! We even dropped one a couple times and it still works fine.

Super easy to install but they don't consistently work. Sometimes they don't go off. Seems like the batteries wiggle loose or something. Very loud though.