Features: 1. This doorbell adopts touch sensor button, which is generous and nice-looking, also can save electricity. 2. Rainproof cover design, waterproof and moistureproof, protect the service life of the machine. 3. Unlocking function (the unlocking interface is suitable for DC 12V normally open/normally locked lock), can also be used in conjunction with access control power. 4. The doorbell is equipped with a exit button interface, it is practical. 5. An outdoor machine can support up to 5 mobile phone users. 6. The doorbell can talk with cell phone, which has clear and loud sound quality. 7. Recording function, mobile phone can check it at any time. 8. Adds a variety of ways to unlock, such as card, password and remote control. 9. P2P servers push visitor's calls, take photos of visitors and detect alarm records. Specification: Condition: 100% Brand New Switching Power Supply: AC 110-240V Machine Current: Less Than 800mA Call Delay Time: 120s±10% Camera Sensor: PC3003 700 Line Lens: 3.6mm, 92 Degrees Function: Unlock, intercom with cell phone, human body detection alarm, movement detection and alarm, infrared night vision, monitored by mobile phone, take photo, video recording, etc. Optional Plug: AU, UK, US, EU Package List: 1 x Outdoor Machine 1 x Power Supply 1 x Remote Control (built-in 12V 23A Battery) 5 x Key Card 2 x Connector 1 x White Wire 1 Pack of Mounting Screws 1 x Instruction Manual 2 x White Plastic Parts 1 x Red Apron Equipment Requirements: 1. Smartphone or tablet for Android 4.1 or above and for IOS operating system. 2. Household network above 4M. 3. Mobile network 3G,4G.