viwomik 5 PCS Wireless Magnetic Window Door Burglar Alarm 120dB Loud Alert Drill-Free Self-Adhesive Security Sensor

Wireless Door & Window Burglar Alarm — 120dB Instant Magnetic Anti-Theft Sensor for Home & Rental Safety

Protect your home, office or rental room without drilling a single hole. This split magnetic door and window alarm triggers an instant, piercing 120dB alert the moment a door or window is opened more than 1cm — loud enough to scare off intruders and alert you immediately. No delay, no wires, no complicated setup.

Mounting takes seconds with the strong self-adhesive tape: just stick the two parts on the door or window frame, and protection starts. Powered by batteries with up to nearly one year of standby, it runs almost maintenance-free, and the one-button switch makes it easy to arm or disarm. Beyond burglary prevention, it doubles as a child safety guard — alerting you when a little one opens a window, helping prevent falls. Compact and discreet, it fits homes, apartments, offices, shops and even safes. Reliable, affordable and simple to use — peace of mind in a small device.