Feature:1. High Security: Protect your home and office from unauthorized entry with this wireless alarm sensor, it is ideal for deterring anyone trying to sneak into your home.2. Loud 125dB Alarm Sound: The powerful 125dB alarm will alert you and scare off intruders, ensuring your safety and peace of mind.3. Battery Powered: The alarm sensor is powered by 2 AAA batteries (not included), offering long lasting and reliable performance.4. Versatile Use: Ideal for homes, offices, hotels, and more, this door window alarm sensor provides an effective and affordable security solution.5. Easy Installation: Simply attach the sensor to your door or window with the adhesive backing, no complicated wiring or tools required.Specification:Item Type: Door Window Alarm SensorMaterial: ABSDecibel: 125dBPower Supply: 2 x AAA Batteries (not included).Package List:1 x Door Window Sensor1 x Main Unit