Model: DS-KB2421 - Hikvision 4-Wire Series (Analog) Details: Water-proof Analog Four Wire Door Station Condition: New Factory Sealed Warranty: 3 Years Warranty.
Model: DS-KB2421-IM - Hikvision 4-Wire Series (Analog) Details: Water-proof Analog Four Wire Door Station Condition: New Factory Sealed Warranty: 3 Years Warranty.
Model: DS-KH2220-S - Hikvision 4-Wire Series (Analog) Details: Storage Analog Four Wire Indoor Station Condition: New Factory Sealed Warranty: 3 Years Warranty.
