UT-2204 is a RS-485 bus split hub designed for RS-485 system used in demanding environments. It supports a data communication rate up to 115.2KBPS and has data buffers and microprocessors. It uses external switching power supply for safety and reliability and is ideal for engineering applications.
The built-in discrimination circuit can automatically sense the direction of data flow and switch the enable control circuit to ensure the switch of transmit and receive in RS-485 mode. The communication distance of RS-485 can exceed 1200m for stable performance, so it's widely used in applications such as video supervision system as a high-performance data interface converter.
UT-2204 RS-485 HUB provides star-type RS-485 bus connection. Users can improve the RS-485 bus structure and split bus segments conveniently to improve the communication reliability. This feature significantly improves the reliability of existing RS-485 network and reduces maintenance interval. Reasonable use of UT-2204 RS-485HUB can help to design a unique, highly reliable RS-485 system.

Interface: Compatible with RS-232 and RS-485 standards of EIA/TIA
Electric connection: dB9/F socket for RS-232C interface, wiring terminal for RS-485 end
Ransmission media: Twisted-pair cable or shielded cable
Operation mode: Asynchronous half-duplex
Signal indicator: 9 signal LEDs: Power (PWR), transmit(TXD1), (TXD2), receive (RXD1), (RXD2) and error (E1-E4)
Data rate: 1200BPS-115.2KBPS
Protection class: ± 15KVESD protection; 1500W lightning surge protection for RS-485 interface
Transfer distance: 0-1.2 Kilometers (115200-1200BPS)
Power supply: DC9-30V 1A
Dimension: 210mm× 140mm× 32mm
Working environment: -40 to 85, relative humidity of 5% to 95%