Feature: 1. High Definition Visual Intercom: The doorbell intercom system is equipped with a high definition camera that provides clear images during both day and night. You can clearly see who is at the door at all times. 2. 7in Wide Screen: With the ability to individually call each room and engage in high definition conversations, the door bell system allows for easy communication and clear visuals between residents and visitors. 3. Access Control Card: By incorporating access control card technology, the Doorbell Intercom System ensures only authorized individuals can enter and exit the premises, ensuring the security of residents' lives. 4. Adjustable Sound Volume: The video intercom system accommodates individuals with hearing impairments by allowing them to increase the volume of incoming calls. 5. Customizable Ringtone: The system offers the flexibility to change the ringtone, providing a personalized and proactive alert system for residents to monitor the outside even without visitors ringing the doorbell. 6. Two Way Communication: The intercom system features intercom capabilities, allowing residents to communicate with visitors in real time and engage in two way conversations. Specification: Item Type: Intercom Doorbell Material: Aluminum alloy Voltage: 100V - 240V Display Resolution: 800 x RGB x 480 Machine Current: Less Than 800mA Call Delay Time: 120s ± 10% Monitoring Delay Time: 40s ± 10% Camera Sensor: High Definition Color CCD or COMS Up to 700 Lines Outdoor Unit Infrared Night Vision Function: Low Open 10LX Infrared Open Indoor Unit Size: Approx. 24 x 15 x 2cm / 9.45 x 5.91 x 0.79in Outdoor Unit Size: Approx. 33 x 13 x 6cm / 12.99 x 5.12 x 2.36in Indoor Unit Installation Method: Wall Mounted Outdoor Unit Installation Method: Embedded. Package List: 1 x Outdoor Unit 5 x Display Screen 5 x Power Supply 5 x Power Cord 5 x Hanging Board 1 x Manual 5 x Access Card 20 x Screw 21 x Screw Accessories 12 x Terminal Head