Window and Door Alarm When Opened (5 Pack) for Kids Safety/Home Security, Sliding Front Door Opening Sensor Alarms for Dementia, 120dB Burglar Alert, Ideal for Business, Garage, Apartment,House, White
$3.99
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Product description
Door and Window Alarm: Know Instantly, Stay Secure. 
This battery-powered door/window alarm features an ON/OFF switch and Set button for easy use. It emits a 120dB alarm when a door/window is opened, perfect for home, apartment, and business security. Also great for monitoring kids, elderly, and dementia, providing extra safety and peace of mind.
On/Off & Set Button
The Set button allows easy arming, disarming, and volume adjustment (90/120dB), while the On/Off switch offers one-click control for simple operation.
90/120dB Adjustable
Choose between 90dB and 120dB alarm options for a loud and clear audible alert, ensuring you’re promptly notified of any potential security breaches.
Powered by AAA Battery
Powered by 2 AAA batteries (not included), the alarm is completely wire-free, offering easy installation and flexibility without the hassle of wiring.
Low Battery Alert
This LED indicator flashes red when the alarm is triggered or when the battery is low, offering clear and immediate visual alerts for quick response.
Home Security
When an intruder opens the door, the sensor triggers an alarm to stop them from advancing.
Kids Safty
Prevents kids from opening doors to dangerous areas, such as pool or cabinet with hazardous items.
Dementia Monitor
Monitors elderly with dementia, alerting when they attempt to open doors to leave safe areas.
Pet Monitor
Keep Pets Safe—120dB Alarm Alerts When Doors or Windows Open!
1 Home Security
2 Kids Safty
3 Dementia Monitor
4 Pet Monitor
Mode 1 – Door Open Alarm
120dB siren sounds for one minute when the door opens; press “SET” to turn off. Great for home security.
Mode 2 – Doorbell Chime
Single “ding dong” sound when the door opens. Ideal for offices and businesses.
Mode 3 – Alarm Stop on Closing
120dB siren sounds until the door closes within one minute or you press “SET.” Stops automatically after one minute if not closed.
Mode 4 – Door Open Reminder
Cycles “beep beep” sound until the door closes or you press “SET.” Prevents unauthorized exits.
The host and magnetic component can be installed on the same plane or at an angle.
Comes with strong 3M double-sided tape for easy installation, no additional tools needed.
Easy Installation
1 Flexible Mounting 2 Double-sided Tape
Can the alarm be used on sliding doors?
Yes, these alarms can generally be used on sliding doors. For optimal performance, ensure the alarm is positioned where it can detect the sliding door’s movement effectively.
Does the alarm require batteries?
Yes, the alarm require 2 AAA batteries to operate, which are not included in the packaging.
Does this alarm have UL certification? Can it pass a pool inspection?
No. While many families use this alarm for pool doors, it does not meet the UL 2017 standard and won’t pass a pool inspection.
How to install?
Ensure the gap between components is less than 0.39 inches, with arrows aligned facing each other.
Does this Door Alarm support remote control?
No, this Door Alarm does not support remote control (for example, it does not support pairing with the RC5311 model remote control in this store), but this product has a Set Button that can be used to adjust the volume, change the mode, etc.
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Customer Reviews
4.4 out of 5 stars 199
4.4 out of 5 stars 199
4.4 out of 5 stars 199
4.4 out of 5 stars 199
4.3 out of 5 stars 316
Price
$18.99$18.99
$33.99$33.99
$33.99$33.99
$18.99$18.99
$66.99$66.99
Quality
2 Pack
5 pack
5 pack
2 Pack
6 Pack Sensor + 1 Pack Gateway
Noise Level
120dB
120dB
120dB
120dB
120dB
Color
White
White
Black
Black
White
Remote Control
✘
✘
✘
✘
✔
Power Supply
AAA Battery
AAA Battery
AAA Battery
AAA Battery
AAA Battery
Emits a powerful 120dB alarm when a door/window is opened, instantly alerting you to any unauthorized entry, perfect for home, apartment, and business security.
Ideal for keeping kids safe from dangerous areas (Such as pools, basements, cabinets containing dangerous goods, etc.) and monitoring elderly individuals with dementia, providing extra peace of mind.
On/Off & Set Button: The Set button allows for easy arming, disarming, and volume adjustment (90/120dB), while the On/Off switch provides one-click control for effortless operation.
Wire-Free: Powered by 2 AAA batteries (not included), this door open alarm is wire-free, offering quick installation and flexibility without the need for complicated wiring.
Low Battery Alert: The built-in LED indicator flashes red when the alarm is triggered or when the battery is low, ensuring immediate visual alerts for prompt action.
Note: This Door Alarm (Model: D130) does not support remote control (RC5311), but various settings can be completed through the Set Button on the host.
13 reviews for Window and Door Alarm When Opened (5 Pack) for Kids Safety/Home Security, Sliding Front Door Opening Sensor Alarms for Dementia, 120dB Burglar Alert, Ideal for Business, Garage, Apartment,House, White
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$3.99
HUY LE –
Window and Door Alarm When Opened
I felt a great need for an additional layer of safety that would notify me the instant a door or window was opened. This was because of the children’s inquisitiveness as well as when my parents sometimes forgot things. I was instantly attracted to this five-pack set of alarms because of how simple the installation seemed to be. Additionally, the alarms promised to have a loud warning that was 120 decibels in volume, which would be able to capture my notice before anything bad occurred. Even though I am normally apprehensive about anything that requires me to place sensors on doors and windows, the installation procedure turned out to be deceptively straightforward. One component of each alarm unit is attached to the frame, while the other component is attached to the movable section, such as a door or a windowpane. Both components are referred to as the alarm unit. In my opinion, the most important aspect of a good setup was the meticulous alignment of both components in such a way that the alarm would activate without fail if the door or window was even slightly separated from its respective position. The adhesive strips are robust enough to ensure that the sensors remain securely in place, but they are not so permanent that I would be unable to alter them if they were misaligned even slightly. Whenever my children are given the freedom to walk about, particularly when they go to the backyard door on their own, I am filled with a sense of self-assurance. In spite of the fact that I am engaged in activities such as cooking or doing laundry, I am able to hear the piercing siren that is 120 decibels in volume. It is loud enough that I can hear it from across the house. The decibel level could be enough to scare someone who is using it for the first time, but I soon understood that the sheer loudness of the device is what makes it such an effective deterrent. With such startling noise, it would be impossible to overlook someone who was attempting to sneak in or out of the building. Additionally, it provides me with a sense of calm for my elderly parent, who occasionally experiences feelings of disorientation and may wander around looking for a door without being able to recall the specific reason for their wandering.
Lindsay –
Yes! So much YES!
These are great! They have great battery life for AAA batteries! Have had them on for over 2 months and they still work great! They are super loud! You can’t miss the noise and at its loudest the panic it causes will definitely get you out of bed immediately ready for a fight and wide awake! The adhesive is ok, works best on the larger piece than the small magnetic strips. Easy to install and a great value for your money! I sleep so much easier at night knowing these are installed on the windows and doors! You can even attach them to a window fan and a wall if you want your window open and they still function well! Would definitely recommend and purchase again!
Laura K –
For more than just doors and windows!!
12/02/25 – we just got these last night so I don’t know how well these will last, but so far, works great, easy to use, VERY loud. Although we cant figure out how to set up the 4 different modes, it is just the intruder mode we have available.The sticky has worked just fine for us. We put these on kitchen cabinets and a night light that the baby won’t leave alone.Great investment so far, I’m quite pleased! They didn’t come with batteries so you’ll have to get some, they take AAA’s.Something they didn’t have on the product specifications was dimensions. The alarm part is just over 10.5 cm tall, 3 cm wide, 1.7 cm deep. The sensor is 4.5 cm long, 1 cm wide, 1.7 cm deep.
Anne –
An Ideal home alarm
These door and window alarms are small, easy to set and install. They were exactly what I needed to alert me if a window or door is opened without my knowledge.
Amazon Customer –
These work!
These work they truly work! They are loud and make you feel safe
Mmarks –
Solid alarm
These are good and solid. TAPE IS SO STRONG THAT it’s important to pay attention to the direction you put them on if you mess up the tape can rip your drywall, paint or be hard to remove and replace. Sound is loud. I like the different modes but which there was better indication without looking at the instructions because the buttons are tiny and very hard to see.
Zack and Brianna Haller –
Not impressed
Not practical for all doors. Very loud (which can be good if that’s what you want). Some of them didn’t even work out of the box even with new batteries so we sent them back.
The_Machete –
Bulky, but preferable due to AAA battery usage.
Very effective and a good deal for those of us who HATE those LF44 button batteries. I very much prefer using AAA batteries, even though these are admittedly bulkier than the other choices. Very loud, by the way.
Syed Nabil Neazee –
I picked up this METAK Window and Door Alarm (2-Pack) because I wanted something simple yet powerful to boost my home security — and wow, these little devices truly deliver! Right out of the box, the setup was incredibly straightforward. You just peel the adhesive backing, stick the main unit and the sensor on either side of the door or window, and you’re done. No drilling, no wiring, no apps — just instant protection.Once installed, I tested them and nearly jumped — the 120dB alarm is no joke! It’s piercingly loud and would easily startle anyone trying to open a door or window. You can even switch between 90dB and 120dB using the side button, which is a great touch if you want something less intense for indoor spaces. I set one on my sliding patio door and another on my front window, and both triggered perfectly every time I opened them even slightly.I also love how versatile they are. Besides home use, I could totally see these working in garages, offices, or even for keeping kids safe — like preventing little ones from opening balcony doors or accessing storage rooms. The low battery alert LED is another smart feature; it flashes when the battery runs low, so you’ll never be caught off guard. They run on standard AAA batteries (not included), so replacements are easy to find.The design is surprisingly sleek for something so loud and functional. The black finish blends nicely with my door frames and doesn’t look out of place. The adhesive backing feels strong and hasn’t budged since I stuck it on. I appreciate that it’s not some bulky eyesore — just clean, modern, and effective.If you’re looking for an affordable, powerful, and beginner-friendly way to boost security, this set is a total win. Whether you live in an apartment, house, or even run a small business, these alarms give instant peace of mind. I genuinely feel more secure knowing any unauthorized entry will be met with a scream of 120 decibels!
Dani –
Holy loud. I’m a single woman living alone in an older house with both a front and side door, which makes security a bit tricky since I can’t hear one from the other end of the house. I also have a shed in the backyard that I can’t hear at all from inside. I got this 2 pack and added a third one of the same kind so I could cover all the doors. They’re super easy to install and made of thick ABS plastic. I dropped one on the floor while setting it up and it was totally fine.The adhesive didn’t stick well to plywood, so I had to McGuiver it with a spare plastic plate screwed into the frame. It would’ve been nice if there was an option for a nail hole or bracket, but on my interior doors it stuck perfectly to the painted wood frames. The adhesive itself is pretty strong.The alarm sound is insanely loud. I can hear the one on the shed door from inside the house, and the other two from anywhere on my property. That alone gives me huge peace of mind and hopefully keeps anyone from trying to come in uninvited.The battery compartment is on the front and easy to open, but it also means someone could just pop the batteries out if they wanted to. I wish the power setup was a little more secure, but overall these things do exactly what I wanted.
R.J.B –
I super like this pack of 2 door/window/patio door alarms! They have a nice and small form factor, not taking much room up at all!They do have 4 different options in terms of alarm output, which are set via clicking the “set” button on the right side of the alarm. Instructions on how to set each alarm, among other little tips that are also included.In addition to the small instruction booklet, the 2 alarms and their magnets you also get double sided tape, which is sized for each component.I must say, I had read the other review that’s listed under this product and it’s completely FALSE. This is a basic, easy to setup and even easier to use. It’s pretty basic, before adding the two sided tape. place the alarm where you want to install it. Make sure it fits properly and that you can line up the “set” word/arrow on the side of both components, once lined up and before taping them down, add two (probably best to use rechargeable) AAA batteries in it, hold the two components in place and flick the on button. Then Try sliding, opening, etc, your door or window and seeing if that works. If so, tape them down, I’d recommend pressing firmly for a moment or two to set the tape in and you’re done.There’s absolutely nothing, notta, 0 complication procedures to do in regards to these alarms! They work great and are super loud!I completely recommend them if you need this sort of alarm on a door/window or two!
J. Devoe –
These little alarms work really well for adding some quick peace of mind around your home. I put one on my front door and another on a sliding side window, and both were easy to position and stick in place. The sound is sharp and loud, so it instantly lets you know when someone opens the door. It’s great if you have kids, elderly family members, or just want some general security.They react instantly when the door separates from the magnet, so there’s no delay. They’re small, reliable, and not complicated at all. If you want a simple alert system without wiring or a full security setup, these do the job perfectly.
Abigail –
It’s a good product, but the adhesive is not enough. I highly recommend purchasing an alternative adhesive if you are using this product.I placed this product on my primary door as well as the door to my furnace room for added safety measures with children. When I open the package, it was very easy to understand the product. It was slightly tricky to find an appropriate position to adhere this device because it requires your door which holds the device and above your door, which holds the sensor to be aligned properly. When you have textured or detailed trim. This can be more difficult. Due to its position requirements, I placed it on the top of my door rather than the side. When I first secured it, it seemed great. I tested the device by turning it on and opening the door. It was well secured on flat, clean, and dry surfaces. Unfortunately, the following day, one of the alarms suddenly fell from the door. Not only did it fall, but the batteries fell out and were no longer secured in the device. As someone with a young child, This very quickly could have become a dangerous situation had I not observed it falling. To make it clear nobody was near the device or the door when this occurred. It is clear that the adhesive on this is not strong enough. I removed this device, which was on my furnace room door and heavily supervised the one on my primary door. The following morning, I noticed the sensor of the set on my front door had fallen into the ground sometime in the night. I have since removed both devices And I do not foresee myself using it moving forward. I wish there was an option to screw this device in for more securement. Or a very strong adhesive were added. I think it is necessary to purchase a better adhesive if you are planning to use these.With all that being said, the alarm is extremely loud and would definitely get your attention within a second. When I turned it off, there was no sound. It was working perfectly! During the time that it was effectively secured on my door, I felt a sense of relief that I would know if my door was accessed unexpectedly. I think the product has a lot of potential.