[Acquisition Type]： Digital

[Interface type]： RS485

[Number of acquisition channels]： 8 channels

[Net weight of product]： 279±5g

[Introduction]：This chapter is a quick start introduction to E831-RTU (4040R-485) series products. It is recommended that users read this chapter and follow the instructions once and they will have a systematic understanding of the module. Users can also choose chapters they are interested in to read as needed. For specific details and instructions, please refer to the subsequent sections.