7 Inch HD IR Video Intercom Doorbell One Camera with Three Display Features: Video intercom doorbell + infrared fill camera, high definition widescreen image. The HD display can be clearly displayed regardless of the day or night system. Each floor room can be called separately and talked separately. If the old man has a bad hearing, he can make a loud voice and change the ringtone. Active wake-up, in the absence of a visitor ringing the doorbell, you can view it outside by monitoring. Specifications: Material: Aluminum alloy Color: White Display size: 23.5 * 14.5 * 2 cm/9.3 * 5.7 * 0.8 in Camera size: 12.7 * 37.7 * 4.5 cm/5.0 * 14.8 * 1.8 in Display resolution: 800*RGB*480 Machine current: less than 800mA Call delay time: 120S ± 10% Monitoring delay time: 40S ± 10% Display installation method: wall-mounted Camera installation method: embedded Camera sensor: HD color CCD or COMS up to 700 lines Connecting cable: 4-core connecting cable comes standard with 1 meter + two-core terminal cable (connected to electric lock) Package List: 1 * Camera 3 * Display 3 * Power Supply 3 * Power Cable 3 * Hanging Board 1 * Instruction Manual 5 * Access Card