Wireless Door Window Magnetic Sensor 105dB Sound Anti Theft Burglar Alarm System for Home Hotel

Feature: 1. Wide Uses: Extensively used in homes, offices, hotels, shopping malls, cabinets, windows, etc., very well to meet your various needs. 2. Easy to Install: Just use double sided tape (not included) to install the sensor on the door and window frame, no need complicated installation tools. 3. Principle: When the distance between the magnetic block and the strip is more than 7mm, an alarm sound of 105db will be emitted. 4. Built?in Battery: Built?in three 1.5V 150mah LR44 button batteries with long battery life, no need to replace battery frequently. 5. High Performance: The door window burglar alarm is very sensitive, effectively protecting your safety. Specification: Item Type: Door Window Sensor Material: ABS Application: For home, office, hotel, shopping mall, etc. Battery: Built-in 3pcs LR44 button battery 1.5V, 150mah Alarm Volume: 105dB Alarm Distance: Approx. >7mm/0.3in. Package List: 1 x Alarm Host1 x Magnetic Strip