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Product Name: Doorbell Visual Intercom Function: video intercom with host, unlock, display, speaker, camera, multiple indoor units can be connected indoors, maximum support 32GTF card Ringtones: 16 optional Unlock: Fingerprint/Password/Remote/Screen One-Touch Unlock Working temperature: -20- + 55 °C Supply voltage: AC110-220V, DC15V / 2A Wiring method: The outdoor unit is connected to the core of the display 4 through a decoder board, and the display is connected to the core of the display 5. Internal unit: Display: 7-inch touch screen Resolution: 960 (H) × 234 (V) Installation: wall and table placement Size: 203 × 106 × 19 mm The outdoor unit: Camera: Sharp CCD Camera 700TVL Wide angle: 92° Rainproof: IP55 dustproof and rainproof Key: mechanical key Power mode: DC12-15V power supply is separately powered Night vision: 5 LED infrared night vision charging lights Material: ABS + metal wire drawing board Installation: embedded installation Size: 155 * 100 * 55mm