Wifi intelligent doorbell connects to network via wireless router or network cable. Mobile devices include smartphone or tablet, could connect to the doorbell. After the visitor rings, mobile devices could intercat with doorbell via real time video and audio, user can view the visitor, then decide to whether intercom or take picture or take video etc. It support Android and IOS operation system. Handheld terminal(smartphone or tablet)support 4 doorbell simultaneously, doorbell also support 8 users to using simultaneously, your family and you can monitor the outdoor environment anytime. Features: Wi-Fi Digital door viewer. Menu/APP Language: English/Chinese Optional 16 ringtones optional. PIR motion detection for automatic photo shooting and videos recording(The video will be stored on cloud, free for 7 days) With IR night vision function, the night vision distance is about 1 meter. 24 hours intelligent security monitoring. Low battery alarm. Andriod 5.0 Operation system. Mobile video call, can take pictures &videos. Alarm mode(video call or video recording) Easy Installation. Device Requirement: 1. Smartphone or tablet above Andriod 4.2 version, IOS. 2. Home network above 2MB. 3. Mobile Phone network 2G, 3G, 4G. Specification: LCD Resolution: 1204*600 Power: built-in 10000mAh lithium-ion battery, standby time is about 45days Battery Alarm: APP real-time alarm, when the poweris less than 5%, APP will send a message Camera: HD 2 million pixels Video Format: MP4 Image Formate: JPG Screen: 7 inch TFT color LCD screen Memory Card: Max support 64G Optional Plug: US Plug, UK Plug, AU Plug, EU Plug Door Thickness: 35mm-130mm/1.4-5.1in Door hole diameter: 15mm-60mm/0.6-2.4in Viewing angle: 160 degree Indoor machine size: Approx 198*138*18mm/7.8*5.4*0.7in Outdoor unit size: Approx 65*65*18mm/2.6*2.6*0.7in Package list: 1 * 7" Inner door viewer, built-in battery 1 * Outdoor Doorbell(Include FPC connecting cable) 1 * USB Cable 5V 1A Power Suply 1 * Steel Bracket 6 * Screw 1 * User Manual Notes: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、Wi-Fi Digital door viewer 2、PIR motion detection for automatic photo shooting and videos recording(The video will be stored on cloud, free for 7 days) 3、With IR night vision function, the night vision distance is about 1 meter 4、24 hours intelligent security monitoring. Low battery alarm 5、Mobile video call, can take pictures &videos