Feature: 1. Ajustable Monitor: Ultra thin design for high definition color indoor 7in monitor, volume, melody, brightness and color adjustable. 2. Excellent Performance: Outdoor doorbell with a rain shield, weatherproof, moistureproof, antioxidant. Stainless steel electric strike is rustproof, sturdy and durable. 3. Multi Function: Video intercom has monitoring, call, unlock, do not disturb and group call functions, connected by BUS 2 wire system. 4. Easy Communication: Video intercom system incorporates night vision camera and doorbell with LED display monitor for easy communication. 5. Widely Use: Video doorbell kit can be used in apartments, villas, hotels, offices, public buildings, etc. Specification: Item Type: Video Intercom Material: Aluminum alloy /ABS/ stainless steelPurpose: Can be used for apartment, villa, hotel, office, public buildings visual doorbell Outdoor Doorbell:Wiring System: BUS 2-wireCamera: CVBS 1000TVL LED: White LED Power: Standby 0.1W Effective Distance: Approx.100m/328.08ft (2 x 0.75mm²) Angle: 92 ° Operating Temperature: -20 - +60℃ Indoor Monitor:Wiring System: BUS 2-wire Screen Resolution: 1024 x 600 Effective Area: 154.08(H) x 86.58(V) 7inPower Consumption: Standby 0.5W Call Delay: 120s±10% Monitoring Delay: 60s±10% Operating Temperature: -20 - +60℃ BUS Power Supply: Input Voltage: AC 100-240VAC Output Voltage: DC24V/2.5A Electric Strike: Size: Length: Approx. 150mm//5.91inWidth: Approx. 39.5mm/1.56inHeight: Approx. 31mm/1.22inVoltage: 12 VDC Current: 450mA unlocking 200mA locking . Package List: 1 x Outdoor Doorbell3 x Monitor1 x BUS Power Supply1 x 2p Leadwire8 x Screw8 x Expansion Tube3 x Screen Bracket3 x Screen Hanging Board1 x 4P Terminal1 x 3P Terminal3 x 2P Terminal1 x Instructions1 x Electric Strike2 x Electric Strike Screw1 x Diode1 x Lock Drawing1 x Switch2 x Switch Screw Note: (1) The machine should be placed in a firm, well‑ventilated, dry and sundry place. Avoid direct sunlight, no strong magnetic field and dust. (2) Do not use chemicals to clean the surface; Clean, use a soft dry cloth. (3) Avoid pressing multiple keys at the same time. (4) Outdoor and indoor units should be matched with the designated model, not mixed with other models or products of other companies.