RDP-21 is an active network device, used for remote management and monitoring of various industrial systems. It has an integrated Wi-Fi module, GSM/GPRS module for communication, a 4-port Ethernet switch, RS485 and CAN interfaces, and several digital and analog I/O ports. It has a high level of connectivity, making it suitable for various applications, including monitoring and controlling automation systems, industrial data acquisition, remote surveillance, and other industrial automation tasks. The RDP-21 also supports multiple communication protocols, and has an intuitive, user-friendly web-based interface. Furthermore, it has a high degree of redundancy and reliability, and is suitable for deployment as a reliable and robust solution in mission-critical applications.