ASENs-904 series isa communication converter which can read Modbus RTU protocol deviceautomatically through RS-485 interface. It will save the data to (a) USBstorage disk (b) Sent to the specified server host (c) Remote monitoringequipment real-time status through the cloud platform. In addition, it can readup to 30 single word data of the device. Furthermore, the user can browsethrough a network device and directly downloaded historical data with real-timestatus. And it can directly control by web page.