Water Proof Analog Kit. Kit includes one monitor VDP-M2220, one metal outdoor panel VDP-B2421, 5-meter 4-wire cable,and other accessories. Monitor VDP-M2220 supports 7 inch LCD screen, 3 monitors cascading in the same system, remote unlocking, monitoring door station and external analog cameras; Outdoor panel VDP-B2421 supports 2MP camera, zinc alloy housing, IP65 and IK7, self-adaptive IR supplement, video intercom communication and 2 door stations cascading in the same intercom system;