Features: 100% and excellent quality. 120db ultra loud alarm ringing. Adopts ABS material, lightweight, antirust and durable. When you install the touch sensor in your house, office or factory, it will ring to alarm once children open the doors and windows or a theft breaks in. In hotel you can install it on the the door or window to ensure safety. After check-out it can be prepared for next-time use. You can easily hang it on the inside door handle in no need of special wires, turn it on and the loud alarm will frighten away unwelcome invaders, thus protecting you and your families. Specification: Condition: 100% Material: ABS Color: Black Cable Length: 10.7cm Power Supply: 9V batteryNot 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 Touch Sensor Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.