Features: 100% brand new and of excellent quality. 120db Ultra High Alarm Ringing. Made of durable ABS material, lightweight, rustproof, and long-lasting. Enhanced Security: Install the pressure sensor in your home, office, or factory to trigger an alarm when children open doors and windows or in case of theft. Peace of Mind While Traveling: In a hotel, install it on the door or window to ensure your safety. After departure, it can be prepared for use next time. Easy to Use: Simply hang it on the interior door handle without special wiring, turn it on, and the loud alarm will scare away unwanted intruders, keeping you safe and secure, thus protecting you and your family. Specification: Condition: 100% Brand New Material: ABS Color: Black Cable Length: 10.7cm Power Supply: 9V Battery (not included) Size: Approx. 9.9 * 5.4 * 2.5cm / 3.9 * 2.1 * 1.0in Package Weight: Approx. 69g / 2.4oz Package List: 1 * Wireless Pressure Sensor Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated the same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.