... .High accuracy: +-(0.2%FS+1) digit8MB memory built-in, for long terms data recordUp to ... can be stored in USB memory, transferred to PC directly by USB flash drive for data analysisThe ... Plug and play.Support 1GB,2GB,4GB USB flash driveCommnication:RS485,RS232, MODBUS-RTU protocol for configuration ... setting parameters and history record can kept by FLASH MEMORY, which can be kept forever even when the ...