Specifications * Name: KOCOM Doorphone DP-103HA * Type: Wired audio intercom/doorbell. * Usage: For homes, apartments, offices. * Function: Two-way audio communication between the person inside the house and the visitor at the door. * Door Release Button: Supports opening an electric door lock if connected to an electronic lock. * Voltage: 220V. * Country of Origin: South Korea. Two intercom units without the external bell. Selling price is 100 SAR for one unit. And 150 SAR for two units. In excellent condition, the box was opened only for testing, but it is new. My location is Dhahiyat Al Falah.