The 4-wire villa intercom system is a video intercom system developed for villa users.The system has call intercom, monitoring, ID card access control and other functions to make sure you live safe.At the same time, theUI design is more clear and easy operation, such as ringtone replacement, volume adjustment and other intuitive operations. It supports hands-free video intercom, monitoring, unlock functions. Support ID access card. Do not disturb function (ring tone volume set to 0). It works in night environment, with infrared LED lighting compensation.Support ringtone replacement, built-in multiple options, users could choose any one you like. Outdoor unit MCU:MA82G5B16 Camera:480TVL Working voltage:DC12V (powered by indoor unit) Working temperature:-40°C~+70°C Installation method: wall-mounted Card capacity:50 Indoor unit MCU:MAT630A Display size:7 inch TFT Size resolution:1026*600 Power supply voltage:DC12V Working temperature:-20°C ~+70°C Installation method: wall-mounted Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC 220V Colour:As Shown Material:plastic Package Contents: 1 x Video intercom doorbell set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.