Use: reservoirs, hydroelectric plants, dams, rivers, watercourses, environmental hydrology, groundwater level, the pool water level monitoring, overview of the rapid development of modern electronic technology, sensor technology, communication technology and computer technology, but also promote water level monitoring Technical development of automation. Water level monitoring system, need water monitoring points, most of the real-time monitoring of data needs to be sent to the management center server for processing, and make a scientific analysis, decision to provide a valid reference. Distribution of monitoring points widely distributed, and most of them set in the harsh environment of the region, through the wire, fiber and other wired devices, transferred to a high cost, difficulty of construction, high maintenance costs, the failure rate data vulnerable to theft, are often less effective. With the maturity of wireless technology applications and upgrades, as one of the best means of communication via GPRS wireless data transmission technology. Monitoring equipment to collect data and alarm information is transmitted through the GPRS network to the timely monitoring department, to achieve real-time water level monitoring, can greatly improve the efficiency of the reservoir management and detailed knowledge of the system. 2 monitor is composed of three parts section of the front-end equipment, communication network, monitoring center. Front-end equipment: water level sensor communication networks: data transmission radio, GPRS data Line or wired. Monitoring Center: server monitoring system software. 3, install a mobile wireless GPRS level monitoring function of the water level at the monitor, built-in an ordinary mobile phone card. Binding administrator phone number, SMS alarm to the administrator phone. For submersible install a water level sensors, water level monitor collected sensor limit, immediately start the alarm to the administrator phone. Continuous alarm five to administrator mobile phones or alarm to five administrators Number. System performance and stability, as long as there is cell phone signal system can carry weather water level detection tasks. Supports 220VAC power, solar power, lithium battery-powered. Remotely set terminal parameters, support remote upgrade. Support for serial water level gauge ,0-5V or 4-20mA signal output level transmitter