Feature: 1. Wireless Installation: The video doorbell intercom system requires no complicated wiring, making installation a breeze. Simply press the doorbell button to connect. 2. Night Vision: Equipped with infrared night vision, this visual doorbell system automatically switches between day and night modes based on the surrounding light level, ensuring clear visibility. 3. Long Lasting Battery: The intercom system offers excellent battery longevity, allowing it to run for 3 to 4 months on a single charge. Plus, the low battery warning ensures your home remains secure. 4. Clear Display: Featuring a 4.3 inch IPS screen, this wireless video doorbell system offers a crystal clear view of your doorstep, providing you with added visibility and security. 5. Wide Application: Suitable for various establishments, our video doorbell with camera and screen is ideal for apartments, villas, hotels, offices, and public buildings. Specification: Item Type: Visual Doorbell Material: ABS Screen Size: 4.3 inches Maximum Support Memory Card: 128G (not included) Working Temperature: -10-60℃ Working Humidity: 10%-90% Doorbell, Display battery type: Lithium battery, 800mAh (built in battery) . Package List: 1 x USB Charging Cable 1 x User Manual 1 x Doorbell 1 x Display Screen 6 x Long Screws 1 x Short Screw 6 x Expansion Bolts 2 x Plastic Board 2 x Adhesive Board Note: 1. The device is a low power doorbell, which will enter sleep mode when not in use. 2. Walls, windows, metal doors, etc. may weaken the signal strength, please try to install the device in an area with strong signal. 3. Before using, pair the doorbell with the indoor screen and install them in an effective area. If the display is too close to the doorbell, resonance may occur, please move them away or lower the volume to eliminate noise. 4. This product is suitable for working temperatures from ‑10°C to 60°C, please do not use this product in environments with excessively high or low temperatures.