Wireless electromagnetic Door Window Anti-theft Alarm

The wireless electromagnetic door and window anti-theft alarm provides a practical and cheap method to help you protect your family and protect your property. When someone forcibly pushes open your door or window, it will emit a strong 90dB alarm sound The alarm sound can be heard from 500 feet, and it is easy to install. It is powered by batteries. Just stick the wireless electromagnetic door and window anti-theft alarm to the door or window and then open the switch to set it in a few seconds. The wireless gadget door and window anti-theft alarm is a convenient gadget that is ideal for keeping, windows and doors in bedrooms, apartments and dormitories. Let you sleep soundly.