Feature: 1. Video intercom, powerful function, directly connected to the indoor unit, simple operation, stable signal, clear image, suitable for multi‑household use. 2. The 7‑inch large‑screen internal phone touch screen operation is convenient and quick. You can view visitors without a mobile phone at home, control unlocking, and the elderly can also use it. 3. White light night vision, automatic fill light, automatic light sensitivity, in the case of insufficient light, automatically turn on the white light, so that you can clearly see visitors at night. 4. The metal body is rain‑proof and dust‑proof, sturdy and durable, not easy to be deformed, and the rain‑proof cover is designed to prevent the outside machine from being attacked by rain and dust. 5. Support access card unlocking and indoor display unlocking. Equipped with 4 access control cards, more suitable for family use and more convenient to use. Specification: Item Type: Video Doorbell Material: Acrylic Sheet + Zinc Alloy + ABS Application: Home, villa, community Voltage: 100-240V Display: 7-inch high-definition LCD display Resolution: 800x400 Ringtones: 15 Camera: CMOS color digital high-definition camera Night Vision: 4 LED infrared night vision lights Best Distance for Night Vision: Approx. 0.2-1m/7.9-39.4in Wiring Mode: RVV4 core wire connection Working Temperature: -20 to 60℃. Package List: 1 x Outdoor Machine1 x Indoor Machine4 x Access Control Card1 x Doorbell Waterproof Shell1 x Fixed Plate1 x Power Adapter7 x Screw7 x Expansion Tube4 x Terminal Line2 x Manual