The Dahua Ultra series Android indoor monitor in its 2-wire version is aimed at projects where simple cabling matters. A 2-wire system carries both power and data over just two conductors, which cuts installation time and makes it much easier to upgrade older buildings that already have basic two-core cable in the walls. Once installed, the monitor works with a compatible Dahua door station to provide live video, two-way communication and remote door release through an Android-based touchscreen. As the top tier of the Android indoor monitor range, the Ultra series is intended for premium apartments, high-end villas and developments that want the best experience Dahua offers.