Abstract: IDA system is Sinco’s new product coming to market during the last few years.IDA is the acronym of intelligent data acquisition. It’s major components are sensors, multiplex modules, interface/repeater, terminal box, I/R module, power supplies, personal computer, sensor cable and bus cable, various lightening protectors, bus power controller, surge protector, manual readout adaptor, portable indicator, and so on. Multiplex modules convert sensor signals to digital form and transmit them through IDA bus to the personal computer (PC) which is on site. The PC converts the digital data received from engineering units and stores them on disk. It also compares incoming data to preset alarm thresholds and triggers alarms if necessary. Data can be printed, displayed, and echoed to a second computer which may be hundreds of RMS away from the first PC. The first PC is used for data logging and the second PC is used for data analysis. Data is transferred either by modem or by floppy disks. The second PC is responsible for archiving data in a database, analyzing data, plotting graphs, and generating reports. IDA system was adopted by TVA for monitoring the Fontana Dam and operated successfully. It also adopted for monitoring a landslide and a tailings dam.