Features: 1.100% Brand New and excellent quality. 2.120db ultra loud alarm ringing. 3.Adopts ABS material, lightweight, antirust and durable. 4.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. 5.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: Features:_x000D_ _x000D_ 100% brand new and excellent quality. _x000D_ 120db ultra loud alarm ringing. _x000D_ Adopts ABS material, lightweight, antirust and durable. _x000D_ 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. _x000D_ 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. _x000D_ 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. _x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Material: ABS_x000D_ Color: Black_x000D_ Cable Length: 10.7cm_x000D_ Power Supply: 9V battery(Not Included)_x000D_ Size: Approx.9.9*5.4*2.5cm/3.9*2.1*1.0in_x000D_ Package Weight: Approx.69g/2.4oz_x000D_ _x000D_ Package List:_x000D_ 1 * Wireless Touch Sensor_x000D_ _x000D_ Note:_x000D_ 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding._x000D_ 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.