Feature: 1. Remote Alarm: When the door and window are illegally opened, the door sensor alarm will push notification to the APP, make sure your door and window are closed. 2. Adjust Sound: Door magnetic alarm sensor allows you can adjust the alarm volume according to your needs, scare the thief and remind the owner to catch the thief. 3. Perfect Distance: Door alarm system operates at a minimum distance of 15mm, so be sure to place the two parts of the alarm as close together as possible when installing it. 4. Loud Volume: Door window sensor adopted alarm sound within 100dB to detect entry, which can keep your home, office, garage, shop, dorm or apartment safety. 5. Easy to Install: Wireless security alarm can be installed anywhere there is an opening, just simply use the adhesive provided and stick it wherever you need it. Specification: Item Type: Door Magnetic Alarm Material: ABS WIFI: IEEE 802.11b/g/n 2.4G Battery Type: 2 x 1.5V AAA battery (Not Include) Working Voltage: DC3V Standby Current: ≤180uA Alarm Current: ≤70mA Alarm Sound: ≤100dB (Within 30cm). Package List: 1 x Door Alarm1 x Magnetic Strip 2 x Double Sided Tape1 x Manual