The Visom RSM(3)485ECHT RS‑485 interface module manual provides specifications, pinout, application circuits and usage guidelines.
The RSM(3)485ECHT series is a single‑channel, high‑speed, isolated RS‑485 transceiver module designed for industrial communication, power monitoring, building automation and mining applications. It integrates power isolation, signal isolation and bus protection in one compact package that can be embedded easily into user equipment.
The manual details the module’s physical dimensions, pin definitions, electrical characteristics, EMC performance, and recommended application circuits. It also includes design notes such as termination, shielding, and protection component recommendations for reliable operation in harsh environments. This manual is written in Chinese.
| Input voltage (RSM3485 ECHT) | 3.3 V (3.15~3.45 V) |
|---|---|
| Input voltage (RSM485 ECHT) | 5 V (4.75~5.25 V) |
| Maximum node count | 256 nodes |
| Operating temperature range | -40 °C to +85 °C |
| Electrical isolation voltage | 2500 VDC |
The module can connect up to 256 nodes.
The RSM485 ECHT version requires a 5 V supply (4.75 V ~ 5.25 V).