RS485 / RS422 Repeater / Extender / Converter (Industrial)

RPT-485_422-2 + PWR-5_US-2

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The RPT-485_422-2 is a multi-function, compact, rugged, industrial-grade RS485 repeater / extender, RS422 repeater / extender or RS485 to RS422 converter, which can be used to extend the RS485 or RS422 distance to up to 4000 ft (1.2km), or to convert a two-wire RS-485 signal into a four-wire RS-422 signal, and vice versa. This industrial RS422 / RS485 repeater / extender / converter operates within a temperature range of -40ºF to 185ºF (-40ºC to 85ºC), and features 600W surge protection and 15kV static protection. The device is powered from an external 5V DC regulated power supply (included), and it supports data direction auto-turnaround. Therefore, it requires no software drivers or flow control, making the unit a highly reliable and truly plug-and-play device and an ideal solution for all types of installations.

CommFront's products quality is ensured by our ISO-9001 quality control system (Cert No. SG12/04213, strictly certified by SGS), and we back our high-quality products with a 5-year replacement warranty and a 30-day risk-free money-back guarantee.


  • Rugged industrial-grade RS485 / RS422 repeater / extender / converter.
  • Converts 2-wire RS485 to 4-wire RS422 and vice versa.
  • Extends RS485 or RS422's distance to up to 4000ft (1.2km).
  • External 5V DC powered (included).
  • Industrial grade enclosed in a rugged, rustless ABS housing.
  • 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
  • Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
  • Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
  • No software drivers or flow controls required.
  • Built-in 600W surge protection, 15kV static protection and circuit protection.
  • Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
  • Safety: Strictly certified by TUV (Cert No. SG-CE-090012).
  • 5-year manufacturer's warranty.


Part Number: RPT-485_422-2
Compatibility:  EIA/TIA RS-485 and RS-422 standard
Power Source: +5V DC (±5%) Regulated Power Supply (included)
Current Consumption: Less than 30mA
Baud Rates: 300 to 115,200bps (auto-sensing and self-adjusting)
Distance: Up to 4000ft (1.2km) at 19,200bps
Connectors: 2x DB-9 Male Connectors; 2x Termination Boards: DB-9 Female and a 6-Way Terminal Block
Surge protection: 600W
Static protection (ESD): Up to 15KV
Dimensions (H x W x D): 0.63 x 1.3 x 4.6 in (16 x 32 x 118 mm) (with termination boards)
Weight: 2.0 oz (57 g) (with termination boards)
Operating Temperature: -40ºF to 185ºF (-40ºC to 85ºC)
Operating Humidity: Up to 90% RH (no condensation)





CommFront products are strictly certified by SGS and/or TUV - the Nationally Recognized Testing Laboratories [NRTLs] in North America (approved by OSHA) and the Notified Bodies in the European Union. Learn More




CommFront products are designed and manufactured to ISO 9001 standards. Our quality control system is strictly certified by SGS (Cert No. SG12/04213). Learn More




CommFront products have been proven to be reliable. We back our high-quality products with a 5-year replacement warranty and a 30-day risk-free money-back guarantee. Learn More

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