2 Wire Apartment Video Doorbell Intercom System With 7 Inch Monitor Night Vision Door Entry System

The 2-wire system required only two wires, power, audio, video and control signal all transmitted by a 2-wire cable, non polarity, central power supply. Use Plug -in connectors and DIP switchers for rapid installation.Integrated Multi functions with simple operation makes the system more attractive, Flexible cable connection to wire, support in -out, branching and mixed mode.Dual intercom communication between indoor units;inner picture memory and extended SD card recording, CCTV camera integrated, call transfer via IP module to mobile phone.