Home Alarm Magnetic Wireless Independent Window, Door Sensor With 90db Buzzer. Applicable Places: Doors, Windows, Homes, Shops, Businesses, Etc. Internet Cafe Computer Chassis Alarm Product Description: The Product is Small and Easy to Install, and the Double-sided Tape Provided Is Easy to Install on the Door or Window. Simply Attach the Main and Auxiliary Parts to The Door and Door Frame, or the Two Windows, and Align Them (left 5 Mm Gap). Once the Thief Slams the Door, Slams the Window, Attempts to Steal (the Main and Auxiliary Parts Are Separated), the Alarm Can Sound a Strong Alarm. When You Want to Open the Door or Window, You Can Control It by the Switch. Installation Method: Fix the Main Unit to the Door/window with Double-sided Tape. Attach Another Strip of Door Magnet to the Door Frame in a Straight Line Along the Mainline. When Checking the Settings, Turn the Main Unit Switch to the "ON" Position. Open the Door and See if the Alarm Sounds a Siren. Specifications: Material: ABS Working Voltage:3V,2 X AAA Battery (not Including) Sounder: 90dB Interval:max 5mm Color: White Installation Way: Magnetic Control Standby Current: Less Than 10mA Working Current: Less Than 70mA Size: L92mm*W33mm X H16mm (main Magnet) L51mm*W11mm X H15mm (sub Magnet) . Your order will be shipped from abroad so please allow the necessary time of at least 14 work days for delivery due to ongoing delays in postal deliveries globally.