[ALARM TRIGGERED BY MAGNETIC WIRELESS SENSOR]: Alarm will be triggered after the front door or window is opened. The alarm system will be activated when the door opens more than 1.5cm. [Super Loud Alarm]: 130dB siren alarm can not only give a big shock to thieves, but also allows you to wake up during your sleep to prevent a terrible accident. [EASY TO USE AND INSTALL]: Wireless remote control, easy to use. Two installation methods: stick on with double-sided sticker or tie up with tape, no tools required. It is suitable for houses, apartments, RVs, offices, hotel rooms, garages and more access warning systems. [PROTECT YOUR CHILDREN]: This door alarm and magnetic wireless sensor window is powerful enough to detect when you enter the entrance, it will notify you when your children open the doors or windows to prevent children and babies from leaving the house. Especially if you have a swimming pool at home, it is absolutely necessary to install a door alarm. [NO WORRY ABOUT NOT