... Apparatus—Wireless GSM/GPRS/RTU Water Level /Rainfall Data Acquisition/Collector/LoggerIntroduceIt is a real-time acquisition device ... to collect, deal and storage hydrological multi-parameter data, which applies communication, telemetry, and computer technology to ... , elevation, clock, mounting height, K (analog conversion) value of rainfall;* Data storage: 512K, (one every five minutes the ...