DOBERMAN SE-0701 Oval Household Anti-theft Door and Window Magnetic Spring Sensor Super Loud Simple Alarm 1. Simple alarm, when someone opens the door and window (the magnetic door is separated from the magnetic strip), the alarm immediately sounds an alarm. 2. The sound of 120 decibels is enough for the thief to flee. 3. Bring your own switch and turn it on when needed. 4. The battery is energy-saving and has a standby time of about 1 year. 5. EVA strong adhesive on the back of the product, just remove the protective sticker on the back to install directly. 6. During installation, the magnetic strip is tightly mounted within 1 cm from the main unit on the scale line, so that an alarm sounds when the doorwindow is opened. Product specifications: 1. Remote control battery (included): 3 AG13 (LR44) button batteries. 2. Applicable places: family, dormitory, renting house, hotel, hotel, clothing cabinet, mobile phone cabinet, etc. 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. Sold by-YJL official store