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Small rectangular metal box DB9 female to terminal block isolated converter

UOTEK

UOTEK UT-502 RS-232 to RS-485/422 Data Converter

SKU CH-CPYC-DF9KB

Converts RS-232 to RS-485 or RS-422 with 2.5 kV isolation, 600 W surge and ±15 kV ESD protection, auto direction control up to 115.2 Kbps over 5 000 m

  • Industrial-grade isolation protects equipment with 2.5KVrms and 600W surge suppression
  • Automatic direction control enables real TXD/RXD/GND communication without RTS handshaking
  • Wide 300bps to 115.2Kbps baud range suits legacy and modern serial devices
  • Connects up to 128 RS-485/422 nodes over 5,000m twisted-pair cable
  • Operates reliably from -40 to 85°C with 9-30VDC power input

Industrial Signal Converter

The UOTEK UT-502 converts RS-232 signals to RS-485 or RS-422 differential signals. It targets engineers and integrators who need reliable serial communication in industrial environments. The unit provides 2.5KVrms optical isolation and 600W surge protection per wire for harsh conditions.

Automatic Direction Control

The converter handles traffic direction automatically without an external RTS flow-control signal. It operates in asynchronous half-duplex mode using only TXD, RXD and GND lines. This simplifies wiring and removes the need for software timing adjustments on the host side.

Multi-Drop Capacity and Distance

The adapter supports up to 128 RS-485 or RS-422 devices on a single bus at 9,600bps over 5,000 metres. At the maximum 115.2Kbps rate the reliable distance drops considerably. It requires a 9-30VDC supply drawing 350mA and operates from -40 to 85 degrees Celsius.

How it compares

Measured against everything we stock in Serial & Protocol Converters, at today’s prices. Recalculated every night.

Price $47.99
Pricier than about 74% of the 121 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What does the 115.2 Kbps baud rate mean for real-world data throughput?

The converter handles asynchronous half-duplex communication at up to 115.2 Kbps, so actual throughput matches the serial device's configured speed within that limit.

How does the RS-485/422 terminal-block interface limit cable runs in practice?

Twisted-pair or shielded cable on the 10-pin terminal block supports runs up to 5,000 m at 9,600 bps, with distance decreasing at higher baud rates.

What clearance and power connections does the 117×80×25 mm enclosure need to mount?

The unit fits a 117×80×25 mm footprint, mounts via the terminal-block screws, and requires a 9-30 VDC supply capable of 350 mA.

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