Operating Mode: Half-duplex transparent transmission; Power Supply Voltage: 6-36V wide voltage range; Communication Isolation: Power isolation, -isolation; Supported Nodes: 32 nodes per RS485 port; Installation Method: DIN rail mounting; Operating Temperature: -40°C to +85°C 6. TXD: Signal Transmit Indicator, flashes when the signal is from RS485 main line to RS485 bus. 7. P3: Third RS485 bus signal indicator. This light flashes when the signal is from the third RS485 bus to the RS485 main line. 1. RS485 Main Line Input Terminal: 120R terminating resistor selection DIP switch; 2. RS485 Main Line Input Terminal; 3. Power Supply Voltage: Module power supply voltage 6~36V; 4. Power Indicator: Solid when the input power supply voltage is normal;5. RXD: Signal Receive Indicator, flashes when the signal is from RS485 bus to RS485 main line; RS485 serial hub: 6-36V wide voltage power supply | High baud rate, plug and play, baud rate: up to 1Mbps, communication distance: up to 1200 meters (affected by the actual usage environment). 8. P2: Second RS485 bus signal indicator. This light flashes when the signal is from the second RS485 bus to the RS485 main line., Weight: 0.2866009406 pounds, Manufacturer: Ehwisbe