Product Description for Advanced Access Control System Revolutionize your security and access management with our Advanced Access Control System, a comprehensive solution designed to enhance safety and convenience in any setting. This system seamlessly integrates cutting-edge technology with user-friendly features, making it an ideal choice for homes, offices, and commercial properties. Explore its standout features: Efficient Power Management Operates on a DC 12V power supply and features an internal board supporting a rechargeable 3.7V Lion battery (battery not included). This setup ensures uninterrupted operation and provides a power failure alarm, alerting you to any disruptions and enhancing reliability. Extensive User and Room Capacity Supports up to 400 room numbers, with each room capable of having two preset phone numbers. Up to 800 phone numbers can access the system for free, triggering the onboard relay to activate the door. This capacity makes it perfect for large buildings, accommodating a high number of users effortlessly. Enhanced Communication and Access Control Provides two-way voice communication and caller ID access control. Known numbers can call the device, which will automatically hang up and open the door if recognized. This allows up to 800 users to open the door using their mobile phones, replacing traditional key fobs and increasing convenience. Intelligent Battery and Alarm System The system's rechargeable battery (not included) ensures continued operation during power outages. It automatically recharges once the main power supply is restored and issues an alarm if the battery power is low, maintaining system integrity at all times. Durable and User-Friendly Design Features an innovative waterproof lock design and a stainless steel front panel, providing durability and a sleek appearance. The double relay output allows easy control of door openers or alarm components, and you can remotely manage these outputs during conversations with visitors through the keypad. Upgrade your security infrastructure with the Advanced Access Control System. Its robust and versatile features ensure that your property remains secure while providing unparalleled ease of access. Experience the next level of security management today!