COMMAX CDV-70A device, a 7-inch video intercom/doorbell screen. You can see and talk to the visitor at the door, and it has a button to open the door if connected to an electric lock. Key Specifications: * 7" TFT LCD screen * Hands-Free audio communication * Supports up to two door cameras * Door release button * Supports connecting an additional intercom * 4-wire connection to the camera * The CDV-70A model itself operates on 100–240V. * Two intercoms and two screens are available for sale. (((((Please contact via WhatsApp only)))))