XIANQI Security: This touch sensor could secure main access points and trigger the alarm when door/ window is opened. 120dB super loud alarm ringing frightens thieves away, more secure in use. Pro Monitoring: This door window sensor offers round the clock monitoring of your home. Use on doors, windows, cabinets, drawers or anywhere you want to notified when it is opened or closed. Doorbell and Alarm Mode: Easy operation, simple one-button switch control doorbell/alarm, double mode can be selected. Multi-purpose: With this alarm installed in your house, office, factory, when the doors and windows are opened by children or the theft, it will alarm you to check for safety. To stay at the hotel, you can install this anti-theft alarm on the door and window, it will protect you, upon checking out, take the alarm with you for next-time use. Easy to Use: The window burglar alert requires no special wire. Just hang on the inside door knob, open the switch, the piercing alarm will scare off any unwanted intruders, leaving you and your home well protected.Batteries not included. Product Quantity: 1 Piece Product color: white