4-wire RS-485 full-duplex provides separate TX and RX differential pairs for higher throughput bidirectional communication in smart home RS-485 networks where half-duplex 2-wire causes latency issues.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | TX+ | Transmit positive A | BUS |
| 2 | TX- | Transmit negative B | BUS |
| 3 | RX+ | Receive positive A | BUS |
| 4 | RX- | Receive negative B | BUS |
| 5 | GND | Signal ground | GND |
4-wire RS-485 full-duplex provides separate TX and RX differential pairs for higher throughput bidirectional communication in smart home RS-485 networks where half-duplex 2-wire causes latency issues.