[HEAVILY USED] PLOJOP Door Window Alarm, 90dB Wireless Sensor

Protect your home or office with this loud 90dB door and window alarm. High-quality magnetic sensors trigger an immediate alarm when a door or window is illegally opened, deterring intruders and preventing children from leaving rooms unattended. The alarm features simple paste installation, requiring two AAA batteries (not included). Its ultra-thin, lightweight design makes it portable and ideal for various locations including homes, apartments, hotel rooms, garages, and offices. Engineered for durability, it withstands various environmental conditions and dust, maintaining stable performance.