F2103 GPRS DTU adopts high-powered RISC CPU and embedded real time operating system. It integrates all the commonly used protocols from logical link layer to upper application layer protocols, such as TCP/IP/UDP and so on. It provides a secure, high speed, reliable wireless internet connection for customers. It supports several ways that trigger DTU to be online, including audio, SMS and data. Also, it supports double or several data centers. This product has been widely used on finance, water supply, environment protection, electric� power system, post and weather fields. Used in embedded systems, automations, inteligents buildings and intelligents traffic system (ITS).