This document describes a RS-485 Transceiver called UT-2209, which has an isolation voltage of 2500Vrms and ESD protection of 600W. It is suitable for industrial environments. It supports data transfer rates from 300bps to 115.2Kbps and has multiple protection features and interface options.
The UT-2209 is an industrial-grade RS-485 optical isolation repeater designed to extend communication distance and increase the number of devices on a network. It features built-in photoelectric isolators and DC/DC isolation modules providing up to 2500Vrms isolation voltage, along with fast transient voltage suppressor protection against lightning and ESD.
The device supports asynchronous half-duplex operation without requiring handshake signals like RTS or DTR. It includes LED indicators for power, transmission (TXD), and reception (RXD) status to assist in fault diagnosis. This manual is written in Chinese.
| Interface Standard | EIA/TIA RS-485 |
|---|---|
| Isolation Voltage | 2500Vrms |
| ESD Protection | +/-15KV |
| Surge Protection Power | 600W per line |
| Relative Humidity | 5% to 95% |
| Transmission Rate | 300bps-115.2Kbps |
| Dimensions | 89mm x 73mm x 22mm |
The maximum transmission distance is up to 1200 meters at speeds between 9600bps and 115200bps.
No, it does not require any handshake signals such as RTS or DTR to achieve RS-485 mode conversion.
The device supports twisted pair or shielded cables as the transmission medium.