







Product description
Door and Window Alarm: Know Instantly, Stay Secure. 
Ensure home security and prevent unauthorized entry with our 120dB Door and Window Alarm. Easy to install with strong adhesive tape—no tools needed—this compact alarm emits a loud 120dB siren when a door or window is opened, effectively deterring intruders and alerting you to potential threats.

Compact Design
Small and compact design fits onto any door or window frame.
Entry Door
Stay Protected—120dB Alarm Triggers When Entry Door Opens, Alerting You to Unauthorized Access!
Window Security
Guard Your Home—120dB Alarm Alerts on Window Opening in Bedroom, Kitchen, and More!
Kid Safety
Keep Kids Safe—120dB Alarm Sounds When Children Open Doors to Hazardous Areas!
Pet Monitor
Keep Pets Safe—120dB Alarm Alerts When Doors or Windows Open!
1 Home Security
2 Window Security
3 Kid Safety
4 Pet Monitor
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.
Powered by 2 AAA batteries (not included) for convenience and reliability.
1 Flexible Mounting 2 3M double-sided tape 3 AAA Battery Operated

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.
Can these alarms 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.
Do these alarms require batteries?
Yes, these alarms 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.
Alarm for Door & Window: The 120dB siren sounds immediately when the door/window opens, preventing unauthorized entry and ensuring the safety of your home and property.
Easy Installation & Use: No wiring required. Powered by 2 AAA batteries (not included), with strong 3M double-sided adhesive for simple, tool-free installation.
Versatile Usage Scenarios: Ideal for homes, offices, pool areas, warehouses, etc. Prevents children from sneaking out, unauthorized door/window access, and provides anti-theft protection.
Powerful 120dB Alarm: The alarm emits a loud 120dB sound when the door/window opens, effectively deterring intruders and alerting family members.
Four Modes: Features four modes: door/window open alarm, doorbell mode, alarm stops when door closes, and door/window open reminder—perfect for various needs.
9 reviews for Window and Door Alarm When Opened (2 Pack) for Kids Safety/Home Security, Wireless Opening Sensor Alarms for Sliding Glass Door, 120dB Burglar Alert, Ideal for Business,Garage,Apartment, Black
Add a review
$15.99

Chris –
Great alarm system!
I really like this alarm! It’s easy to set up, loud(!), and works well for keeping the dogs and kids in our home. Purchased not really to keep people out, but to make sure our toddler wasn’t leaving the house to visit his best friend that lives across the street now that he can open the door independently.
Bezli –
Simple Yet Effective Door Alert
Added this little device to my side door about 3 weeks back as an extra security measure and it’s doing exactly what it’s meant to do. The setup literally took 2 minutes – just stuck it on with the included adhesive strips after popping in some batteries. The volume is plenty loud enough to hear throughout the house when a door opens. Been testing different positions and found it works best about 6 inches from the top of the door frame. The mode options are handy – switched it to doorbell mode during the day and alarm at night. The adhesive is holding strong even with frequent door movement, though i wiped the surface with alcohol first for better stick. One thing to note is that the battery compartment is a bit tricky to open the first time. The sound is crisp and clear, not muffled like some similar units ive tried before. Had to adjust the alignment once because it was giving false alerts, but hasnt happened since getting it positioned just right. The plastic housing feels decent enough though not super premium – but at this price point it’s fine. Really like how you can switch between instant alarm and the gentler door chime depending on your needs. The low battery warning started after about 2 weeks of heavy testing which seems reasonable. Only wish the mounting bracket had some angle adjustment options for different door setups.
JonLop –
Works very good
Good product to improve security at home , easy installation and simple instructions, not too big fits great and looks good
HUY LE –
Door Alarms for Home Security
Installation of these alarms is a pleasure, and the magnetic door sensor alarm may be integrated without any difficulty with a variety of entrance points. An additional layer of safety is provided by the 120 dB window alarm, which functions similarly to a watchful guardian. The sophistication of the design allows them to fit in perfectly with the aesthetic of my house, making them stealthy but strong sentinels. In the event that a door or window is opened without my knowledge, the open alarm will promptly notify me, while the reminder alarm will serve as a gentle nudge, therefore decreasing the likelihood of inadvertent invasions. There is no sacrifice made in terms of the user-friendliness of the functions included in this complete security solution. The loudness of 120 decibels is loud enough to attract attention without being unduly obtrusive, and the multiple settings are designed to meet a variety of requirements. Using the Dingdong mode as an alternative to the doorbell is a pleasant experience, and the near alarm ensures that the guarded entry points are not compromised in any way.
Ruslan Maksymenko –
Nice door and window alarms!
I purchased these door and window alarms, and they work perfectly! The installation was super easy – just peel and stick. They are compact and blend in well with the door or window frames.The alarm is very loud, which gives me peace of mind knowing it would alert me right away if someone tries to open the door or window. It’s also great for keeping kids safe and preventing them from opening doors unexpectedly.Overall, this is an affordable and effective solution for home security.
Esmerlda –
Product was already used
When I receive the product, it was already used. The adhesive that comes with the product to attach it to the wall was partially, on the product, and whatever was left had paint that was removed from wherever they took it off. Had to go to the hardware store and buy new adhesive.
Sonya –
These work so good !!
These work so good I’m expressed on how easy they are to install. The battery has a long life. It’s very loud when the door is opened. The adhesive was very good. You won’t go wrong buying these for the price it’s more than a good value for the money.
Mury Burk –
It’s loud.
It’s plenty loud and was easy to install. Unfortunately it sounds just like the door chime at a liquor store and I couldn’t stand it. We purchased it as a precaution to alarm if the toddler decided to take a moonlit stroll after they discovered how the locks work🤦🏼♀️
Muhammad Sohail Anwar –
Cheap quality. Not a value for money. I have bought another product which is of very good quality as compared to this and of much less price.