Protect FamilyThis touch sensor could secure key access points and trigger alarm when door/window is opened. Super loud 120dB buzzer sounds thieves, safer to use. Wide Range of ApplicationsThis door glass sensor can monitor your home around the clock. Use it on doors, windows, cabinets, drawers or anywhere you want to be notified when it is opened or closed. Doorbell/AlarmEasy operation, single button doorbell/alarm switch control, dual mode can be selected. Safety Essential ItemsWith this alarm installed in your home, office, factory, when doors and windows are opened by children or theft, it will alarm you to check security. For staying in the hotel, you can install this burglar alarm on the door and window, it will protect you when you leave, take it away for your next use. Easy to UseWindow burglar alert requires no special wires. Just hang on the interior door knob, open the switch, the window opening alarm will scare away unwanted intruders, leaving you and your home well protected. Specifications: Condition: New Material: ABS plastic Color: white Power supply: 3*AAA battery (excluded) Alarm sound: 120dB Alarm mode: Induction + Touch Installation mode: Hang door, window Package weight: about 61g Instructions: 1. Make sure the applicable environment is stable, without any factors causing the products to shake and vibrate in the room. 2. Install 3*AAA batteries and dial them with your desired alarm sensitivity (H/L/0). General L level selection. 3. Hang the product on the door/window handle and open the switch statically to start working. 4. The alarm sounds at 120 decibels when someone wants to open the door/window illegally. Package List: 1 * Alarm