DOBERMAN SE-0701 Oal Household Anti-theft Door and Window Magnetic Spring Sensor Super Loud Simple Alarm1. 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-saing and has a standby time of about 1 year.5. EA strong adhesie on the back of the product, just remoe the protectie 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.