The ATC-1204 is a 4‑port RS‑485 hub with 3500 V optical isolation, surge protection and up to 5 km transmission distance for industrial networks.
The ATC-1204 RS‑485 hub provides a star‑topology bus structure with four isolated RS‑485 ports and an RS‑232C uplink. Each port features 3 kV+ optical isolation, short‑circuit/open‑circuit protection, and automatic data‑flow control, improving network reliability in harsh electromagnetic environments.
Designed for outdoor and industrial applications such as highway toll collection, road monitoring and power data acquisition, the hub operates from –20 °C to 70 °C, weighs 0.6 kg, and measures 140 mm × 130 mm × 30 mm. It complies with RoHS, CE and FCC standards. This manual is written in Chinese.
| Number of Ports | 4 RS‑485 ports + 1 RS‑232C uplink |
|---|---|
| Interface Compatibility | EIA/TIA RS‑232C, RS‑485 standards |
| Baud Rate | 300 ~ 115.2 Kbps |
| Maximum Transmission Distance | 0 ~ 5 km |
| Isolation Voltage | 3500 VRMS |
| Surge Protection | 1000 W per line |
| Operating Temperature | -20 °C ~ 70 °C |
| Storage Temperature | -40 °C ~ 85 °C |
| Weight | 0.6 kg |
| Dimensions | 140 mm × 130 mm × 30 mm |
It can transmit up to 5 km (0‑5 km) over twisted‑pair or shielded cable.
The device operates from –20 °C to 70 °C.