Enhance your security management with the GSM-KEY-4G Door Access Controller, a state-of-the-art solution that leverages cutting-edge cellular technology to provide seamless remote access and control. This versatile system is ideal for both residential and commercial applications, offering a reliable and efficient way to manage entry points. Cellular Network-Based Security The GSM-KEY-4G operates on a cellular network, utilizing caller ID to verify authorized numbers and automatically open doors. This ensures that only approved individuals can gain access, providing a robust layer of security. Global Connectivity and Flexibility Integrated with a professional, industrial-grade 4G engine, this system can receive calls using its SIM card number, functioning like a standard 4G phone. With its built-in 4G module, it is capable of operating worldwide through 4G, 3G, and GSM networks, offering unparalleled flexibility and reach. Comprehensive Access Management The system can store and manage up to 200 authorized numbers, providing extensive control over who can access your premises. It checks incoming calls against its memory list before granting access. Additionally, it supports power failure alarms for rechargeable batteries (battery not included), ensuring continuous operation. Unlimited Remote Access Unlike traditional remote controls, the GSM-KEY-4G allows you to open doors from anywhere, even from another city, using your mobile phone. This feature eliminates waiting time and enhances convenience, making it easy to manage access remotely. Cost-Effective Operation with Relay Switches The system features two independent relay switches. By dialing its mobile number to activate the first relay switch, the system rejects the call without answering and activates the connected device, ensuring there is no charge for the call. This efficient operation recognizes authorized numbers, providing secure access without incurring additional costs. Choose the GSM-KEY-4G Door Access Controller for a reliable, versatile, and cost-effective access management solution. Perfect for safeguarding your property and ensuring ease of access, this system is an essential tool for modern security needs.