Product Description for Advanced Access Control System Enhance the security and convenience of your property with our Advanced Access Control System. Designed to integrate seamlessly into modern environments, this system offers state-of-the-art technology for secure and efficient access management. Discover the features that make this system a must-have for any security-conscious individual or organization: Reliable Power Supply and Backup The system operates on a DC 12V power supply and includes an internal board that supports a rechargeable 3.7V Lion battery (battery not included). This feature ensures continuous operation and provides a power failure alarm to keep you informed of any disruptions. Extensive Room and Phone Number Capacity Accommodate up to 400 room numbers, each capable of storing two preset phone numbers for calls. The system allows up to 800 phone numbers to call in for free, triggering the onboard relay to activate the door. This capacity ensures that large buildings and complexes can efficiently manage access for multiple users. Two-Way Voice and Caller ID Access Control Enjoy two-way voice communication with visitors and use caller ID access control to manage entry. When a known number calls the device, it automatically hangs up and opens the door, eliminating the need for physical keys or fobs and allowing up to 800 users to enter using their mobile phones. Intelligent Battery Management The system supports an internal rechargeable battery (not included) that provides continued operation during power outages. It automatically charges when the main power supply is restored and issues an alarm if the battery power is low, ensuring you are always aware of the system's status. Durable Design and Remote Control Features Featuring an innovative waterproof lock design and a stainless steel front panel, this system is built to withstand tough conditions. With double relay outputs, you can easily control door openers or alarm components. Remotely manage relay outputs during conversations with visitors by pressing the keypad, enhancing both security and convenience. Upgrade your security infrastructure with our Advanced Access Control System. Its robust features and user-friendly design make it an ideal solution for residential, commercial, and industrial applications. Experience peace of mind and seamless access control today!