DS-KIS203 is a 1-subscriber Hikvision video intercom system dedicated for single-family homes. It consists of 7" DS-KH2220 indoor station/monitor with a resolution of 800 x 600 px and DS-KB2421-IM gate/door station equipped with a color pinhole camera with a resolution of 720 x 576 px. The indoor monitor is made in TFT LCD technology and supports up to 2 gate/door stations. The monitor can cooperate with CCTV analog camera operating in CVBS standard and be used for displaying the video from the camera and the door station(s), and for control of the electric strike(s). The external/outdoor door station is a panel made of zinc alloy, equipped with a relay dedicated to controlling the electric strike, a pinhole camera, and an IR illuminator with a range of 2 m, ensuring correct visibility of the caller in the absence of lighting. Thanks to small dimensions, the panel can be aesthetically mounted even on a narrow metal post. The whole set can be extended with additional 2 monitors and an additional gate/door station. The video door phone uses a 4-wire system.