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E810-U15C USB to RS-485 to RS-232 converter Industrial grade TTl communication adapter Optoelectronic isolation RS422 high protection industrial lightning protection
[Introduction]：E810-U15C is an isolated universal USB to RS-232, RS-422, RS-485, TTL interface converter based on CH340 solution. This USB to serial port module can convert USB signals into RS-232, RS-422, RS-485, TTL signals without external power supply. Each interface provides surge protection.
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| No. | Name | Interface Description |
| 1 | PWR | Power indicator, red, lights up when powered on |
| 2 | TXD | Data transmission indicator, yellow, flashes when USB sends data |
| 3 | RXD | Data reception indicator, yellow, flashes when USB receives data |
| 4 | PE | Ground terminal, can be connected to the earth |
| 5 | T+/A | RS422 T+ terminal, connected to R+ when used as RS422, connected to A when used as 485 |
| 6 | T-/B | RS422 T- terminal, connected to R- when used as RS422, connected to B when used as 485 |
| 7 | R+ | RS422 R+ terminal, connected to T+ when used as RS422 |
| 8 | R- | RS422 R- terminal, connected to T- when used as RS422 |
| 9 | GND | Digital ground signal interface |
| 10 | TXD | TTL TXD interface, connected to external RXD interface |
| 11 | RXD | TTL RXD interface, connected to external TXD interface |
| 12 | VCC | Power output positive interface, maximum output current 100mA |
| 13 | GND | Power output negative interface or digital ground signal interface, can be used in combination with VCC |
| 14 | RS232 | DB9 male connector, pin 2 is RXD interface, pin 3 is TXD interface, pin 5 is GND interface |
| 15 | USB | Standard Type-C interface |