DS-KIS203T KIT Door Station (DS-KB2421-IM) + Indoor Station (DS-KH2220) Door Station (DS-KB2421-IM) Pinhole Camera with 1920 × 1080 1080HD Dimensions (W × H × D) 128 mm × 42 mm × 24.8 mm Indoor Station (DS-KH2220) 7“ Monitor resolution 800 × 480 Hands-free video intercom communication, Four-wire interface 1 Relay Output, Power consumption ≤5 W 12 VDC 1-ch Video Input, 1-ch Audio Input/Output Dimensions (W × H × D) 195.8 mm × 132.8 mm × 18.39 mm