The vibration alarm is an effective to . Its unique design adds a touch of atmosphere to your home. The door and vibration sensor can promptly detect abnormal situations in doors and windows, ensuring the safety of your family. Features -Color:White -Material:Plastic -Size:7.40X7.40X1.30cm/2.91X2.91X0.51in -Alarm volume: 130dB -Power supply: 2 x AAA batteries -Working humidity: 95% - prompt: 2.3V ±0.2V -Standby current: <=10uA -Working temperature: 0 degree centigrade~50 degree centigrade -This alarm emits a powerful 130 decibel sound that is sure to deter any potential and keep your home security and safe. -The alarm adds a touch of elegance to your home decor, making it both functional and visually appealing. - sensor, alarm is able to detect any abnormal activities in your doors and windows, providing you with an added layer of security. -Easy-to-use, you can monitor and control this alarm in real-time, giving you peace of mind no matter where you are. -This alarm is versatile and can be installed on various doors and windows, making it a great choice for any home or business. Package list: 1 x Vibration Sensor