Wireless Wifi Smart Ip Video Doorbell Intercom System Monitor. Specifications: Doorbell Camera Sensor: 1/4 CMOS,720P Pinhole/100wide Angle Camera Anti-oxidation Aluminium Alloy Panel Simple 4-wire Connection R LED Illumination for Better Night Vision Keypad with Blue LED Backlight for Night Operation Rainproof,Dustproof,and Anti-vandal Power Supply: Supplied from Indoor Monitor with 2x720P Wired Door Phone Camera Monitor Display: 10 Inch TFT LCD Touch Monitor Resolution: 1024(H)x768(V) System:LINUX Channel:4 Channels Unlock: Monitor,smartphone and Tabletunlock Additional Memory: SD Card (64GB Max.) Network:WIFI/RJ45 Port Power Supply:Built-in(AC 100~240V), DC12V Multiple Intercom:Up to 4 Monitors((The Slave Monitor is MZ-VDP-738EM) Multiple Doorbell:Up to 2 Doorbells Ringtone:16 Ringtones Optional Made Of High Acrylic Wire Drawing Panel and TFT Display Installation: Surface Mount(Wall Mount) Package Included: 1x 10 Inch+1x 7 InchScreen Indoor Monitor 2x Doorbell 2x Power Adapter 1x Mouse 5x 200mm 4 Pin Connector 1x Screw Bag 2x User Manual . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.