GSM Remote WiFi Controller RTU5024 GSM Access Control System for Door Security with Remote Door Opening Function Product description Detailed Description: Features: The RTU5024 GSM door opener offers a highly convenient remote access solution for both residential and commercial use. It allows users to remotely open and close doors and gates from any location, simply by calling the device from an authorized phone number. This means that distance is no longer a barrier for controlling your door. The system is compatible with GSM networks worldwide, covering all major frequency bands such as 850/900/1800/1900 MHz. Furthermore, the device uses caller ID recognition to allow access only for pre-approved numbers, enhancing security and preventing unauthorized use. By sending an SMS, users can easily add or remove phone numbers, avoiding the need for physical remotes or buttons. Specifications: Frequency Bands: 850/900/1800/1900 MHz (Global compatibility) Maximum Authorized Numbers: 999 authorized phone numbers Relay Switch Time: Programmable for specific needs Caller ID Recognition: Rejects calls from unknown numbers SMS Functionality: Add or delete user numbers through SMS commands Applications: Control doors, gates, fences, garage doors, shutters, and machines Confirmation Messages: The system sends feedback to authorized numbers upon successful operation Package Includes: 1 x GSM Door Opener RTU5024 The RTU5024 GSM door opener system is a reliable and flexible access control solution that offers great convenience, security, and versatility. It is perfect for those who require remote access control for gates, doors, and other devices, especially for properties with multiple users or locations.