Check the listing for details. Commax 8-Apartment Building Door Camera Lobby Unit DRC-8AC2. Condition: New. Listed at 310.00 USD. Commax 8-button Door Camera Model: DRC-8AC2 Features and Function8-button door camera for apartment building up to 8 householdsFlush mounted typeIndividual 4 wires to each apartment video doorphone; 2 wires for electric door strike (optional)Compatible with Fine View series video doorphones such as CDV-35A, CDV-43U, CDV-70K, CDV-70U.Requires power supply DC12V, RF-12015S (AC110V~240V) [sold separately]Requires protection against water and rain (door camera is not waterproof)SpecificationsImage device: 1/4" Color CCDPower source: DC12V, 230mAInstallation system: 4 wires to each videophone, 2 wires to electric door strikeCommunication ways: synchronous Video transmission standard: NTSCMinimum illumination: 0.1 Lux (300 mm from the camera)View angle: Horizontal: 68º, Vertical: 55ºOperating temperature: -10ºC to 50ºCMounting type: flush mountFlush box dimension: 299 x 114 x 50Dimension: 316 x 123 x 16 (59) Wiring Diagram Connectable products: RF-12015S power supply 7" Video monitor CDV-70K 7" Hands-free Video monitor in blue CDV-70U 7" Hands-free Video monitor CDV-70U in white 4.3" Hands-free Video monitor CDV-43U 3.5" Video monitor CDV-35A