The Ebyte E810-R21 is an industrial-grade 2-way to 1-way RS485 buffered isolation repeater featuring DC 9~40V wide voltage input, industrial EMC level 3 protection, photoelectric isolation, and plug-in terminal blocks.
| Parameter Name | Parameter Value | Description |
|---|---|---|
| Data interface | RS-485 | Standard RS-485 interface standards |
| Baud rate | 1200 ~ 115200 bps | Configurable serial transmission speed |
| Working voltage | DC 9 ~ 40V | Wide voltage input support |
| Protection level | Industrial EMC Level 3 | High reliability against harsh interference |
| Isolation voltage | 1.5KV | Photoelectric isolation barrier |
| Electrostatic protection level | Contact 4KV, air 8KV | ESD protection for field deployments |
| Storage space | Single channel host 3k Byte | Buffered caching capability |
| Expansion channels | 2-way RS-485 host | Multi-to-one repeater configuration |
| Product size | 100 x 54 x 32 mm | Compact rail-mounted enclosure |
| Parameter name | Parameter value | Description |
| Common parameters | Data interface | RS-485 interface |
| baud rate | 1200~115200bps | |
| data bits | 8 bits | |
| Stop bit | 1/2 digit | |
| Check digit | None/Odd/Even | |
| storage space | Single channel host 3k Byte | |
| Working voltage | DC 9~40V | |
| Protection level | Industrial EMC Level 3 | |
| Isolation voltage | 1.5KV | |
| Electrostatic protection level | Contact 4KV, air 8KV | |
| pulse wave surge | Differential mode 1KV, common mode 2KV | |
| Working temperature and humidity | -40~85℃, 5%~95% (no condensation) | |
| Storage temperature and humidity | -40~105℃, 5%~95% (no condensation) | |
| Ground terminal | support | |
| difference parameter | Expansion channels | 2-way RS-485 host |
| Product size | 100×54×32mm | |
| Product weight | 70±5g | |
| Interface standards | 5.08mm copper pin plug terminal |













