This specially designed sensor alarm can protect you from theft and . When the window or door shake detected, the alarm sensor will make a 125 sound to remind you. Easy to install, just need to it on the window or door. Features - Color: White - Material: ABS. - Size: 7.00X7.00X0.95cm/2.75X2.75X0.37 inch. - Battery: 3 x LR44 1.5V battery (included). - Alarm time: About 80min. - Alarm power: 0.28W. - Standby time: 1 year. - Alarm decibels: 125dB. - Standby current: <=10uAh. - When shake detected, it will make a alarm sound to warn you. - design make you use it conveniently, you can it off when you not need it. - Adjustable sensitivity from gently touch to push or beat, for preventing false alarms. You can easily set it according to your needs. - It’s perfect for your home, apartment, office, store, garage, dorm room, or even RV. - These anti theft devices are great additions to home security and give you extra piece of mind. Package list: 1 x Window Alarm