1,120dB door window alarm with very loud siren in the compact body 2,Magnet triggered alarm sounds when window or door is opened 3,It will alarm with loud sound which can warn you and scare burglar away 4,Professional designed product, quick and sensitive response 5,Practical home use product, tiny and fashion, great for home or shop use Description: and magnetic sensor alarm unit with remote control door window security device. Features: 120dB door window alarm with very loud siren in the compact body. Magnet triggered alarm sounds when window or door is opened. It will alarm with loud sound which can warn you and scare burglar away. Professional designed product, quick and sensitive response. Practical home use product, tiny and fashion, great for home or shop use. Specifications: Sensing Mode: Magnet Alarm Sound: 120dB Alarm Battery Type: 9V 6F22 battery (NOT included) Size: 9 x 5 x 3cm/ 3.5 x 2.0 x 1.2in Remote Distance: 30m/32yd Weight: 112g(approx.) Instruction: 1. Put a 6F22 9V battery in the product (we recommend alkaline battery in order to prolong service life. 2. Switch "ON" product, and keep the distance between two magnets less than 5mm. then press remote control button. Red "lock" button to enter alarm mode, and black "unlock" button to exit alarm mode. 3. Under alarm mode, if the two magnets separate, product will make a 120db sound, til it was shut down by remote or magnets are close again. 4. When alarm volume becomes smaller, please replace battery in time; Take out the battery if you will not use it for a long time. Package Includes: 1 x Alarm (Battery is NOT included) 1 x Remote Control 1 set x Mounting Accessories Note: Please allow small size error due to manual measurement. Thanks for your understanding. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.