2020 top selling mini anti theft 130db magnetic door open sensor window alarm
* Loud 130 dB alarm sounds when door or window opens, and will sound continuously 60 seconds, helps deter intruder and alert
* Easy to install and no wiring required. Includes two magnetic burglar alarm sensors and double-sided tape.
* Built-in low battery test button to easily check battery life, includes 3x LR44 batteries for each security alarm.
* Open door alarm perfect for home, car garage, apartment, dorm room, RV, hotel, traveling and more. Suitable for sliding glass
doors, doors, window, glass window and so on.
Four modes optional for each sensor
1). 30 seconds alarm