Smart Wireless Remote Video Doorbell Intelligent Visual Doorbell Home Intercom HD Night Vision Wifi Security Door Doorbell Features: Intelligent night vision: the light sensor the doorbell will provide a clear vision in the dark of the night 80 degree wide angle lens: Use the app to get the full 80 degree view of your front balcony. See your visitors clearly and effortlessly Wifi compatible: the wifi range of the video doorbell is up to 10m (33 feet), it easily connects to your home wifi network by sending live video to your phone. You can see and talk to the visitor from the of your bed, at work or vacation Real bidirectional audio: When someone presses the doorbell, a notification will appear your mobile phone or tablet. You can the port remotely using the app. Communicate directly through your device WIFI connection, no needs, achieve a two way intercoms between the doorbell and mobile phone.Real- mobile phone, support two way calls, photos, recording, caring for your family makes you more secure The doorbell can be controlled by APP, automatical work model, intelligent and portable.Portable in size and weight, convenient to install, Battery not include, need to install battery for use (Support 2.4G WIFI,NOT support 5G WIFI) : Specification: Sensor: 30W gc0328cmos sensor Color:White Lens: 80wide angle lens Signal to noise : 41db Video format: jpg Recording mode: press key to recording Battery: Requires 3AAA battery (not included) Ding Dong: support rf433mhz Ding Dong Power input: 5V/2A Recording range: 5m Wireless connection: support 2.4G WiFinot support 5G WIFI System support: Android 4.3 or IOS 9.0 or above Package size:11x10x5cm/ 4.33x3.94x1.97 inch Gross weight:138g/ 0.3 lb Package included: 1 x Door 1 x Ding dong machine 1 x User manual 1 x Installation tools kit