Video Intercom YDV-4403 Monitor screen: 4" LCD Screen resolution: 320 (RGB) x 240 pixels 24VDC power supply Connections: 2 lines without polarity Dimension: 185 (H) x 190 (W) x 26 (P) mm Outdoor unit: 12VDC blocking power supply, 300Ma. SKU Description 0016053 Monitor YDV-4403 0016140 Video Intercom YDV-4403 Related Products: Video Intercom YDV-7703 Outdoor Station Multi-button