产品特点：
- True RS-485 Star Wiring Hub
- Independent RS-485 driver for each channel
- LEDs for indicating RS-485 TxD/RxD activity
- Auto Switching baud rate, 300 ~ 115200 bps and fixed baud rate setting via rotary switch, 1200 ~ 115200 bps
- Hubs can be daisy chained for 256 channels
- 120Ω termination resistor for each channel
- Power Input, +10 ~ +30 VDC
- Operating Temperatures, -25 °C ~ +75 °C
- DIN-Rail
规格：
| Interface | |
| Input (Master) | 1 RS-485 Channel: Data+, Data- |
| Output (Sl***e) | 4 RS-485 Channels: Data+, Data- |
| Transfer Distance | Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps (Belden 9841 2P twisted-pair cable, if different cables are used, the tran***ission distance may change) |
| Self-Tuner Asic Inside | Yes |
| Speed | 300 ~ 115200 bps via Self-Tuner mode; 1200 ~ 115200 bps via Fixed Baud Rate mode |
| ESD Protection | Yes |
| 2500 VDC Isolation on CH1 ~ CH4 | 2-way Isolated |
| Connection | Removable 10-Pin Terminal Block x 1; Removable 6-Pin Terminal Block x 1 |
| LED Indicators | |
| Power/Communication(TxD/RxD) | Yes |
| Power | |
| Input Voltage Range | +10 VDC ~ +30 VDC (Non-isolated) |
| Power C***umption | 1.2 W |
| Mechanical | |
| Casing | Plastic |
| Flammability | Fire Retardant Materials (UL94-V0 Level) |
| Dimensi*** (W x H x D) | 72 mm x 122 mm x 35 mm |
| Installation | DIN-Rail |
| Environment | |
| Operating Temperature | -25 °C ~ +75 °C |
| Storage Temperature | -30 °C ~ +80 °C |
| Humidity | 10 ~ 90% RH, non-condensing |