Features: Experience unparalleled security with our wireless door and window vibration sensors alarm, featuring a powerful 130dB loud to deter intruders effectively. Designing with space saving profile, this device is equipped with a high sensitivity vibration sensors and long lasting battery for continuous protective. Ideal for homeowners, shopkeepers, and hotel managers seek reliable security solution without the hassle of frequent maintenance. Perfect for various environment, including homes, retail stores, and hospitality venues, ensuring vital entry point are safeguarded against unauthorized access. Enjoy peacing of mind with its easy installation process and low battery alerts feature, allowing you to maintain optimally functionality effortlessly. Specifications: Component:ABS Size: Approx.64x51x9mm/2.51x2x0.35inch Quantity:1pcs/3pcs Package Includes: 1pcs/3pcs Wireless Door Window Sensors Alarm note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.