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Serial Converters/Repeaters/Isolators (310)

Reliable Serial Communication
Choose serial converters, repeaters and isolators by interface, port count, baud rate, isolation, connector type, DIN rail format, driver support and cable distance

DistriNode serial converters, repeaters and isolators help connect legacy devices, PLCs, meters, POS terminals, access control, CNC equipment, routers, servers and industrial controllers where RS-232, RS-422, RS-485, USB or Ethernet links must stay stable. Compare USB-to-serial adapters, multi-port converters, repeaters for longer cable runs, opto-isolated interfaces, surge protection, screw terminals, DB9 connectors, DIN rail housings, Windows and Linux drivers, Modbus use, half-duplex or full-duplex wiring and whether the link is for commissioning, permanent automation, service laptops or electrically noisy environments.

310 products66 brandsUSB -> RS-485Official distributor

How to Choose Serial Converters

Match the standard
RS-232, RS-422 and RS-485 use different wiring, distance and signalling rules.
Check isolation
Optical isolation protects equipment when ground loops or industrial noise are possible.
Plan drivers
Service laptops, servers and embedded systems may need specific chipset support.
Respect distance
Repeaters and proper termination help long RS-485 runs stay reliable.

What You Will Find Here

USB to Serial AdaptersRS-232 ConvertersRS-485 RepeatersSerial IsolatorsRS-422 AdaptersDIN Rail ConvertersDB9 Serial AdaptersModbus InterfacesMulti-Port Serial CardsIndustrial Serial Links

Leading Serial Interface Brands

DELOCKMOXAStarTechEXSYSROLINEATENDIGITUSMANHATTANLINDYINLINERENKFORCEEQUIPUNITEKACTLOGILINKMICROCONNECTWENTRONICAXAGON
Integration tip: Write down the serial standard, connector, baud rate and wiring mode before replacing a converter.

Frequently Asked Questions

Can RS-232 and RS-485 be connected directly?
No. They need a proper converter because signalling and wiring are different.
When is isolation needed?
Use isolation when devices are powered from different sources or the environment has electrical noise.
Why do some USB serial adapters fail with old devices?
Chipset drivers, voltage levels and handshake lines may not match the equipment.
Brand: DELOCK Stock: 84
The DeLOCK 64265 is a serial converter, repeater and isolator that enables data transmission between devices with RS-232 and RS-422/485 interfaces. Ho..
Interface Type Serial Product Type Serial Protocol Converter Number of Po... 1 Port Connector A DB9
R1,386
Ex Tax:R1,205
2 suppliers Reward +R4
Add to Cart
Brand: DELOCK Stock: 49
The DeLOCK 64314 RS-232 serial converter, repeater and isolator provides galvanic isolation for RS-232 connections, protecting connected equipment suc..
Interface Type Serial Product Type Serial Isolator Number of Po... 1 Port Connector B DB9
R799
Ex Tax:R695
2 suppliers Reward +R2
Add to Cart
Brand: DELOCK Stock: 1
The DeLOCK USB 2.0 Type-C male to Serial RS-232 RJ45 male adapter provides a straightforward solution for connecting computers to serial console ports..
Interface Type USB-C Product Type USB Console Serial Adapter Number of Po... 1 Port Connector B RJ45
R593
Ex Tax:R516
3 suppliers Reward +R1
Add to Cart
Brand: EXSYS Stock: 286
The EXSYS EX-1309-9 USB 2.0 to RS-232/422/485 cable provides a single high-performance 16C550-type UART compatible RS-232 serial port over a 9-pin mal..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
R1,959
Ex Tax:R1,704
2 suppliers Reward +R6
Add to Cart
Brand: W&T Stock: 5
The W&T 81009 is a compact Serial Converter Repeater Isolator that transmits RS-232 data over plastic duplex fiber up to 80 meters. It derives power f..
Interface Type Serial Product Type Serial Isolator Number of Po... 1 Port Connector A DB9
R3,413
Ex Tax:R2,967
1 supplier Reward +R12
Add to Cart
Brand: MOXA Stock: 2
Moxa UPort 1150 - Serial Adapter - USB 2.0 - RS-232/422/485 — Genuine MOXA product supplied by DistriNode.Available with live stock, verified product ..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
R3,266
Ex Tax:R2,840
1 supplier Reward +R11
Add to Cart
Brand: DELOCK Stock: 15
The DeLOCK Adapter USB Type-C to 4 x Serial RS-232 DB9 provides four RS-232 DB9 ports for connecting printers, measuring instruments, controllers, IoT..
Interface Type USB-C Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
R2,383
Ex Tax:R2,072
2 suppliers Reward +R8
Add to Cart
Brand: ACT Stock: 616
The ACT USB to Serial Converter Basic version (AC6000) provides a simple way to connect RS‑232 serial devices to a computer via a USB Type‑A port. The..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Serial Port
R640
Ex Tax:R556
1 supplier Reward +R2
Add to Cart
Brand: StarTech Stock: 5
Add four RS232 serial ports to any notebook or desktop computer using a single USB portThis 4 Port USB to RS232 Serial Hub lets you connect up to four..
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 4 Ports Connector B DB9
R2,726
Ex Tax:R2,371
4 suppliers Reward +R9
Add to Cart
Brand: StarTech Stock: 11
Add one serial RS-232 port with com retention to any laptop or computer with a USB portThe ICUSB2321X Professional grade USB Serial Adapter cable conv..
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 1 Port Connector A DB9
R1,219
Ex Tax:R1,060
6 suppliers Reward +R4
Add to Cart
Brand: StarTech Stock: 3
Add an RS232 serial port to any system with an available USB motherboard headerThe ICUSB232INT1 USB to RS232 Serial Adapter lets you add an RS232 port..
Interface Type Internal USB Header Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector A DB9
R410
Ex Tax:R356
6 suppliers Reward +R1
Add to Cart
Brand: StarTech Stock: 5
Add RS232, RS422 and RS485 support to your laptop or desktop computer via USBThe ICUSB2324852 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM ..
Interface Type USB Type-A Product Type Serial Protocol Converter Number of Po... 2 Ports Connector B Serial Port
R2,588
Ex Tax:R2,251
4 suppliers Reward +R9
Add to Cart
Brand: StarTech Stock: 2
Convert a USB port into 16 RS232 serial ports in an industrial rack-mountable chassis - and daisy chain multiple hubs for a scalable solutionHere's an..
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 16 Ports Connector B Serial Port
R10,827
Ex Tax:R9,415
3 suppliers Reward +R41
Add to Cart
Brand: KEENETIC Stock: 20
The Keenetic Buddy 6 SE is a powerful Wi-Fi 6 signal booster designed to extend and enhance your wireless network coverage. With dual-band AX1800 spee..
R2,111
Ex Tax:R1,836
1 supplier Reward +R7
Add to Cart
Brand: SATEL Stock: 9
The SATEL ISO-RS485 is a galvanic isolator designed for RS-485 data buses, providing reliable isolation and protection in security, automation, and in..
Product Type Serial Isolator Primary Seri... RS-485
R822
Ex Tax:R715
3 suppliers Reward +R2
Add to Cart
Brand: ECOLAN Stock: 200
The EFB Elektronik EB853C Blue is a USB A plug to DSub 9‑pole (DB9) plug signal converter with a 1.8 m cable length. It enables connection of serial d..
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
R670
Ex Tax:R582
3 suppliers Reward +R2
Add to Cart
Brand: Hikvision Stock: 11
The Hikvision DS-3E0503DP-E/R is a professional PoE repeater designed to extend Power over Ethernet (PoE) connections for IP cameras, access points, a..
R650
Ex Tax:R565
3 suppliers Reward +R2
Add to Cart
Brand: Hikvision Stock: 11
The Hikvision DS-3E0505P-E/R is a high-performance Gigabit PoE repeater designed to extend Power over Ethernet and data transmission distances beyond ..
R1,015
Ex Tax:R883
6 suppliers Reward +R3
Add to Cart
Brand: LOGILINK Stock: 27
On a busy production floor, a technician connects eight legacy RS232 devices—barcode scanners, weigh scales, and CNC controllers—to a single industria..
Interface Type USB Type-A Product Type Multi-Port USB Serial Hub Number of Po... 8 Ports Connector B DB9
R1,574
Ex Tax:R1,369
1 supplier Reward +R8
Add to Cart
Brand: OPTOMA Stock: 6
M-Bus level converter that galvanically isolates and bridges up to 20 M-Bus slave devices to RS-232 or RS-485 control systems, all from a compact DIN ..
Product Type Serial Protocol Converter Isolation & ... No Primary Seri... RS-232 / RS-422 / RS-485
R1,237
Ex Tax:R1,075
3 suppliers Reward +R3
Add to Cart
Brand: BCS Stock: 100
The BCS BCS-U-DA is a high-performance USB 2.0 to RS-485/422 serial adapter designed for industrial and commercial applications. It provides a reliabl..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B Terminal Block
R1,858
Ex Tax:R1,616
1 supplier Reward +R5
Add to Cart
Brand: UGREEN Stock: 283
IT technicians configuring network switches, point-of-sale systems, or industrial controllers often face the challenge of connecting legacy RS-232 dev..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
R314
Ex Tax:R273
1 supplier Reward +R1
Add to Cart
Brand: ACO Stock: 1
Intercom system converter module that bridges the gap between ACO Familio P and Familio PT installations. This DIN-rail unit translates 2-wire non-pol..
Product Type Serial Protocol Converter Isolation & ... No Primary Seri... Serial
R832
Ex Tax:R723
2 suppliers Reward +R2
Add to Cart
Brand: NO NAME Stock: 7
In a busy warehouse, a technician connects a legacy barcode scanner to a modern laptop without a serial port using this RS232 to USB converter cable. ..
Interface Type USB Type-A Product Type USB-to-Serial Converter Cable Number of Po... 1 Port Connector B DB9
R836
Ex Tax:R727
1 supplier Reward +R2
Add to Cart
Brand: INLINE Stock: 26
HDMI 2.0b repeater that extends 4K UHD signals up to 30 meters total, supporting HDR10, HDCP 2.2, and 18 Gbps bandwidth for flawless video and audio.A..
Product Type Serial Repeater / Hub
R524
Ex Tax:R456
2 suppliers Reward +R1
Add to Cart
Brand: EXSYS Stock: 2
With a maximum baud rate of 921.6 Kbps, this adapter handles high-speed serial communication effortlessly, making it ideal for industrial automation, ..
Interface Type Serial Connector B DB9 Primary Seri... RS-232 Product Type USB Adapter Cable
R2,640
Ex Tax:R2,295
1 supplier Reward +R9
Add to Cart
Brand: EXSYS Stock: 10
Where many USB-to-serial adapters rely on generic or cloned chips that drop connections under load, the EXSYS EX-1311-2T is built around a genuine FTD..
Interface Type Serial Primary Seri... RS-232 Product Type USB Adapter Cable
R1,674
Ex Tax:R1,456
1 supplier Reward +R5
Add to Cart
Brand: EXSYS Stock: 2
Most USB-to-serial adapters compromise on either port count or signal integrity, but the EXSYS EX-3674 refuses to cut corners. It packs four true RS-2..
Colour Black Connector 1 2 x 3.5 mm Product Type USB4 & Thunderbolt-Compatible Cable USB Standard USB 3.2 Gen 1
R1,541
Ex Tax:R1,340
1 supplier Reward +R5
Add to Cart
Brand: EXSYS Stock: 13
The EXSYS EX-2311-2 stands out as a professional-grade USB to RS-232 adapter that leverages the trusted FTDI FT232RL chipset for flawless serial commu..
Interface Type Serial Primary Seri... RS-232 Product Type USB Adapter Cable
R1,420
Ex Tax:R1,235
1 supplier Reward +R4
Add to Cart
Brand: EXSYS Stock: 3
When a single serial port isn't enough, the EXSYS EX-1348HMV steps in with eight independently configurable RS-232/422/485 ports over a single USB 2.0..
Interface Type USB Type-B Product Type Multi-Port USB Serial Hub Number of Po... 8 Ports Connector B DB9
R7,304
Ex Tax:R6,351
1 supplier Reward +R27
Add to Cart
Brand: EXSYS Stock: 12
RS-232 serial converter, repeater, and isolator in one compact metal housing. The EX-47920 regenerates and optically isolates RS-232 signals, protecti..
Interface Type Serial Primary Seri... RS-232
R2,211
Ex Tax:R1,922
1 supplier Reward +R7
Add to Cart
Brand: EATON Stock: 24
Solar installers and maintenance crews use the Eaton SOL30-SAFETY/2MC4-U as a firefighter safety switch in photovoltaic systems up to 1000 V DC. It pr..
Isolation & ... No
R8,310
Ex Tax:R7,226
1 supplier Reward +R31
Add to Cart
Brand: ALLNET Stock: 50
The ALLNET ADQ-USB 3.0-ISO-W is a high-performance USB 3.0 SuperSpeed isolator providing galvanic isolation up to 1000V DC. It effectively eliminates ..
Interface Type USB Type-A Product Type Serial Isolator Number of Po... 1 Port Isolation & ... Yes
R5,998
Ex Tax:R5,215
1 supplier Reward +R22
Add to Cart
Brand: ALLNET Stock: 40
The ALLNET ADQ-USB 3.0-ISO is a high-performance USB 3.0 SuperSpeed isolator providing galvanic isolation up to 1000 V RMS. It effectively eliminates ..
Interface Type USB Type-A Product Type Serial Isolator Number of Po... 1 Port Isolation & ... Yes
R6,233
Ex Tax:R5,420
2 suppliers Reward +R23
Add to Cart
Brand: KIRK TELECOM Stock: 8
The KIRK Telecom Repeater (model 02334601) is a DECT signal repeater designed to extend the coverage area of KIRK/Polycom/Spectralink DECT systems. It..
R2,026
Ex Tax:R1,762
1 supplier Reward +R6
Add to Cart
Stock: 30
The Morley Hum Removal Tool Box is a professional-grade ground loop isolator designed to eliminate hum and buzz from audio signals. Ideal for musician..
R2,803
Ex Tax:R2,438
1 supplier Reward +R9
Add to Cart
Brand: GLOBAL CACHé Stock: 3
Serial-over-IP converter with one RS-232 DB9 port, enabling remote control of serial devices over a 10/100 Ethernet network. Supports baud rates from ..
Interface Type Serial Product Type Serial Protocol Converter Number of Po... 1 Port Connector B DB9
R3,322
Ex Tax:R2,889
1 supplier Reward +R12
Add to Cart
Brand: RTI Stock: 1
Integrators deploying RTI control systems in commercial AV setups often need to bridge legacy RS-232 devices to the IP network. The RTI ESC2-PLUS solv..
Interface Type Serial Product Type Serial Protocol Converter Number of Po... 1 Port Connector B RJ45
R4,306
Ex Tax:R3,744
1 supplier Reward +R15
Add to Cart
Brand: STRONGBYTE Stock: 5
Unlike generic DECT repeaters that require manual configuration and often suffer from compatibility issues, the STRONGBYTE Vocovo 1302 is engineered s..
Product Type Serial Repeater / Hub
R10,590
Ex Tax:R9,208
1 supplier Reward +R41
Add to Cart
Brand: GYS Stock: 5
The GYS 082564 stands apart from simple relay-based isolators by combining a 140A continuous rating with automatic voltage-sensing control in a sealed..
R1,523
Ex Tax:R1,324
1 supplier Reward +R5
Add to Cart
Brand: EATON Stock: 18
Electricians and panel builders use the Eaton IS-16/1 as a main switch or load disconnector in distribution boards and control cabinets. It isolates c..
R643
Ex Tax:R559
1 supplier Reward +R2
Add to Cart
Brand: KATHREIN Stock: 12
Galvanic isolator with F-connectors that blocks DC voltage and low-frequency interference while passing satellite, terrestrial and cable TV signals fr..
Interface Type USB Type-A Product Type USB-to-Serial Adapter Number of Po... 1 Port Connector B DB9
R1,602
Ex Tax:R1,393
1 supplier Reward +R5
Add to Cart
Brand: IXXAT Stock: 7
The Ixxat CAN-CR200 is a CAN bus repeater that extends network reach and increases node count with galvanic isolation. It connects two CAN segments, p..
Interface Type CAN / Fieldbus Product Type CAN / Fieldbus Fiber Converter Isolation & ... No Primary Seri... CAN Bus
R9,809
Ex Tax:R8,530
1 supplier Reward +R40
Add to Cart
Brand: R. STAHL SCHALTGERÄTE GMBH Stock: 10
In a chemical processing plant, a technician needs to safely transfer a 4-20 mA signal from a transmitter located in a hazardous area to the control s..
Interface Type Serial Product Type Serial Isolator Number of Po... 1 Port Connector B Open Wires
R2,844
Ex Tax:R2,473
1 supplier Reward +R10
Add to Cart
Brand: IXXAT Stock: 12
The Ixxat CAN-CR100 is a CAN/CAN-FD repeater that provides galvanic isolation and signal regeneration for reliable CAN and CAN FD networks. It support..
Interface Type CAN / Fieldbus Product Type Serial Repeater / Hub Number of Po... 1 Port Isolation & ... Yes
R7,878
Ex Tax:R6,851
1 supplier Reward +R30
Add to Cart
Brand: IXXAT Stock: 2
This Ixxat CAN/CAN-FD repeater (model 1.01.0210.20000) provides galvanic isolation between two CAN segments, enabling reliable extension of CAN networ..
Interface Type CAN / Fieldbus Product Type Serial Repeater / Hub Number of Po... 1 Port Connector B Terminal Block
R9,269
Ex Tax:R8,060
1 supplier Reward +R36
Add to Cart
Brand: M-E MODERN-ELECTRONICS Stock: 10
Wireless doorbells often lose signal strength over distance or through walls, leaving you unable to hear visitors. The M-E MODERN-ELECTRONICS Bell 214..
Product Type Serial Repeater / Hub
R1,195
Ex Tax:R1,039
1 supplier Reward +R4
Add to Cart
Brand: METZ Stock: 3
For installations where a 230 VAC control signal must trigger a floating relay output without any direct electrical connection, the METZ CONNECT Poten..
Product Type Serial Isolator Isolation & ... No
R2,013
Ex Tax:R1,750
1 supplier Reward +R7
Add to Cart
Brand: EXSYS Stock: 7
Industrial and medical USB devices often suffer from ground loops and electrical noise that cause data errors or even damage connected equipment. The ..
Interface Type USB Type-A Product Type Serial Isolator Number of Po... 1 Port Isolation & ... Yes
R3,626
Ex Tax:R3,153
1 supplier Reward +R13
Add to Cart
Brand: EXSYS Stock: 13
Electrical noise and ground loops can corrupt data or damage equipment when USB devices share a power domain with industrial machinery. The EX-1452IS ..
Interface Type USB Type-B Product Type Serial Isolator Number of Po... 1 Port Isolation & ... Yes
R4,373
Ex Tax:R3,802
1 supplier Reward +R16
Add to Cart
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