B&B Electronics - The Serial Communication Experts

Industrial strength converters and repeaters

Whether you need simple interface conversion, longer range, or to send your serial over even longer distances on a variety of fiber optic, we’ve got you covered. We design, build and test these industrial workhorses to keep your equipment up and your data flowing, day in and day out.

All of our industrial serial converters and repeaters come with 2KV isolation and wide temperature operation for harsh industrial environments. Set up is fast and easy – with built-in Automatic Send Data Control, there are no software drivers to install or configure.

Plus, with our Industrial Converters and all B&B Electronics products, you get:

Which Serial Converter is Right For You?  

Tough
Tougher
Toughest
Rock Solid Reliability 
3-way isolation, Class 1 Div 2   
Shock and vibration tested           

Choose by Specification

Isolation

2-way data (2KV)
3-way on data and power (2KV)
3-way data and power (2KV)

Housing

Plastic
Plastic   
Metal

Mounting

DIN Rail
DIN Rail
Panel

Modbus Compatible

Yes
Yes
Yes

Shock and Vibration Tested

Yes

Wide Temperature Operation

-40 to 80°C
-40 to 80°C
-40 to 85°C

Certifications

UL recognized
CE
UL 508
CE
Class1 Div2
UL pending
CE
NEMA TS1-TS2
IEEE 1613
IEC 61850-3

Choose by Application

Factory automation  
✓ 
✓ 
In-cabinet conversion
✓ 
✓ 
Warehouse automation
✓ 
✓ 
Security
✓ 
✓ 
Motors and drives 
✓ 
✓ 
Heavy industrial    
✓ 
✓ 
Oil and gas   
✓ 
✓ 
Mining  
✓ 
✓ 
Water/wastewater     
✓ 
✓ 
Submetering   
✓ 
✓ 
Electric utilities 
✓ 
✓ 
Smart-grid applications 
✓ 
✓ 
Traffic control   
✓ 
✓ 

Industrial Serial Converters

Rock-Solid Reliability at the Right Price

The world’s most popular Serial Converter is also our best value. Its compact design  fits neatly in tight cabinets where it keeps working day in and day out. Automatic Send Data Control means easy set-up and no software drivers to deal with.

Specifications

Model No. Description
485LDRC9 Isolated RS-232 to RS-485 DIN rail mount converter
485LDRC9KT Kit: (1) converter, (1) 24VDC power supply, (1) 9PAMF6 cable
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MDR-20-24 24VDC, 1A DIN Rail Power Supply, Slimline
PAMF6 DB9 Male to DB9 Female cable, 6'
MDR-20-12 12VDC, 1.67A DIN Rail Power Supply, Slimline
DRPM25 35mm DIN Rail to Panel Mount Bracket, 25mm wide

Triple Isolation and Class 1/Div 2 Certification for Tough Industrial Environments

Standing up to a wide variety of industrial applications makes Ilinx™ our most versatile serial converter. Removable terminal blocks make wiring a snap. Automatic Send Data Control means no software drivers to deal with. Built-in switchable termination and biasing make setup easy.

Specifications

Model No. Description
485DRCi Triple isolated RS-232 to RS-422/485 DIN rail mount converter
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MDR-20-24 24VDC, 1A DIN Rail Power Supply, Slimline
MDR-20-12 12VDC, 1.67A DIN Rail Power Supply, Slimline
DRPM25 35mm DIN Rail to Panel Mount Bracket, 25mm wide

IlinxHardened – Shock and Vibration Tested For Your Toughest Applications

Housed in a Rugged IP30 – rated Metal Panel Mount Enclosure, the Ilinx™ Hardened is absolutely our Toughest Industrial Serial Converter. Ilinx™ Hardened was designed to meet the stringent requirements of electrical substations, but its resistance to shock loads and vibrations make it perfect for transportation or most any harsh environment. Built-in switchable termination and biasing make setup easy.

Specifications

Model No. Description
485DRCI-PH Hardened RS-232 to RS-422/485 Converter
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PS5R-SC24 C1D2 24VDC, 1.25A DIN Rail Power Supply, Slimline
DRAD35 DIN rail adapter clips (pair)     

DRAD35                                                                            

Industrial Serial Isolated Repeaters

Double the Range of Your Serial Devices(ISOLATED MODBUS WIDE TEMP)

Perfect if you want a sturdy, reliable repeater with isolation but don’t want to break the bank. These optically isolated repeaters will get the job done at the best possible price. Automatic Send Data Control means easy set-up and no software drivers.

Specifications

• 2-way optical isolation, 2KV on input/output

• Wide temperature operation (-40 to +80°C)

• Modbus compatible

• DB9 or terminal block connection for RS-232

• Terminal block connection for RS-422/485

• Operates on 10-30 VDC

• Panel mounts with optional adapter

• LED indicators for power and data

• Automatic Send Data Control

• UL recognized

Model No. Description

232OPDR Isolated RS-232 DIN rail mount repeater

232OPDRKT Kit: (1) 232OPDR converter, (1) 24VDC power supply

485OPDR Isolated RS-422/485 DIN rail mount repeater

485OPDRKT Kit: (1) 485OPDR converter, (1) 24VDC power supply

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MDR-20-24 24VDC, 1A DIN Rail Power Supply, Slimline

MDR-20-12 12VDC, 1.67A DIN Rail Power Supply, Slimline

For More Rugged Environments, Step Up to IlinxIsolated Repeaters

These tough models confidently perform day after day, year after year in industrial environments that would demolish pale imitators. Tough, but affordable – they’re an outstanding investment in peace of mind. cUL Class I Div2 certification

Specifications

• 3-way optical isolation, 2KV on data ports

and power circuits

• Wide temperature operation (-40 to +80°C)

• Modbus compatible

• DB9 connection for RS-232

• Terminal block connection for RS-422/485

• Wide range operation on 10-48 VDC

• Panel mounts with optional adapter

• LED indicators for power and data

• Automatic Send Data Control

• Built-in switchable bias and termination resistors

Model No. Description

232OPDRi Triple isolated RS-232 DIN rail mount repeater

485OPDRi Triple isolated RS-422/485 DIN rail mount repeater

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MDR-20-24 24VDC, 1A DIN Rail Power Supply, Slimline

MDR-20-12 12VDC, 1.67A DIN Rail Power Supply, Slimline

ILinxHardened Isolated Repeaters –

Designed for the Toughest Environments

With its rugged IP30 rated metal panel mount enclosure, ILinx™ Hardened can take on the most

abusive environments and perform with phenomenal reliability. Originally designed for installation

in electrical substations, its specifications even exceed the NEMA TS1/TS2 requirements for transportation applications. Choice of RS-232 and 422/485 models,

Specifications

• 3-way optical isolation, 2KV on data ports and power circuits

• Wide temperature operation (-40 to +85°C)

• Modbus compatible

• DB9 connectors (232OPDRI-PH)

• Removable terminal blocks for serial connection (485OPDRi-PH)

• Wide range operation on 10-48 VDC

• DIN rail mounts with optional adapter

• Automatic Send Data Control

• LED indicators for power and data

• 2g shock, 30g vibration tested

Model No. Description

232OPDRI-PH Hardened RS-232 Isolated Repeater

485OPDRI-PH Hardened RS-422/485 Isolated Repeater

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PS5R-SC24 C1D2 24VDC, 1.25A DIN Rail Power Supply, Slimline

Industrial Serial to Fiber Optic Converters

Serial to Multi-Mode Fiber at the Right Price

Extending communications up to 2.5 miles is the job of B&B Electronics’ FOSTCDR line. Why pay

more for features or distance you don’t need? If your application requires the fiber optic light to be

off in the idle state, choose the FOSTCDR-INV. Rugged dependability is yours - at our best price

Specifications

• RS-232/422/485 to multi-mode ST fiber optic conversion

• 2-way optical isolation, 2 KV on input/output

• Wide temperature operation (-40 to +80°C)

• Modbus compatible

• Multi-mode ST connectors

• Operates on 10-30 VDC

• Panel mounts with optional brackets

• Automatic Send Data Control

• LED indicators for power and data

• UL recognized (FOSTCDR only)

Model No. Description

FOSTCDR RS-232/422/485 to multi-mode fiber optic converter, ST

FOSTCDR-inv RS-232/422/485 to multi-mode fiber optic converter, ST

FOSTCDRKT Kit: (2) FOSTCDR converters, (2) 24VDC power supplies, (2) cables

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MDR-20-24 24VDC, 1A DIN Rail Power Supply, Slimline

DFMM-STST-1M Multi-mode Fiber Optic Cable, 1m

ILinxTriple Isolation and Up To 9 Mile Range

Our ILinx fiber converters are packed with functionality you need in heavier industrial

environments. ILinx FOSTCDRi-SC extends communication up to 9 miles (15 km).

If you need cUL Class 1 Div 2 certification, select ILinx FOSTCDRi model

Specifications

• RS-232/422/485 to fiber optic conversion

• 3-way optical isolation, 2 KV on

input/output and power

• Wide temperature operation (-40 to +80°C)

• Modbus compatible

• Multi-mode (ST) or Single-mode

(ST or SC) options

• Wide range operation on 10-48 VDC

• Panel mounts with optional brackets

• Supports Fiber Ring Functionalities

• Automatic Send Data Control

• LED indicators for power and data

• Multi-mode = 2.5 mi. (4 km)

• Single-mode = 9 mi. (15km)

• Switchable termination and biasing

Model No. Description

FOSTCDRi Triple Isolated RS-232/422/485 to multi-mode converter, ST

FOSTCDRi-SC Triple Isolated RS-232/422/485 to single-mode converter, SC

FOSTCDRi-ST Triple Isolated RS-232/422/485 to single-mode converter, ST

ILinxHardened – Shock and Vibration Tested

For Your Toughest Applications

ILinx™ Hardened meets the demands of Electrical Substations, Subway Tunnels, and other tough environments. The IP30 metal panel

mount enclosure lets this fiber converter handle the abuse. 1.2k&#1048576 Transmit/Receive and Termination at 120

Specifications

• RS-232/422/485 to fiber optic conversion - with heavy-duty specifications

• 3-way isolation: 2KV on data ports and power circuits

• Wide temperature operation (-40 to +80°C)

• Modbus compatible

• IEEE 61850-3 & IEEE 1613

• Removable terminal block for serial connection

• Wide range operation on 10-48 VDC

• DIN rail mounts with optional bracket

• Multi-mode fiber extends communications to 4kM; single-mode (to 15kM)

Model No. Description

FOSTCDRI-PH-MC Hardened RS-232/422/485 to multi-mode fiber optic converter, SC

FOSTCDRI-PH-MT Hardened RS-232/422/485 to multi-mode fiber optic converter, ST

FOSTCDRI-PH-SC Hardened RS-232/422/485 to single-mode fiber optic converter, SC

Port Powered RS-485 Converters

Convert RS-232 to RS-485 quickly and easily

No power supply or software drivers needed!

• Powered from RS-232 handshake lines – no power supply needed!

• Extend RS-232 signals to 4,000 feet (1.2 km)

• Communicate at baud rates to 115.2 kbps

• Automatic Send Data Control – no software drivers to install or manage

These port-powered converters quickly and easily change TD and RD RS-232 lines to RS-485 signals. All feature Automatic Send

Data Control which automatically enables the driver when data is present on the RS-232 side. Control of the driver is automatic at

speeds up to 115.2 kbps

Choose your port powered converter by interface/connector

Model RS-232 Connector RS-485 Connector Output Optional Power Supply

A 4WSD9R DB9 Female DB9 Female RS-485 2 or 4-wire 485PS

or RS-422

B 485SD9TB DB9 Female Terminal Block RS-485 2-wire 485PS2

C 485BAT3 DB9 Female Terminal Block RS-485 2 or 4-wire (2) AAA batteries or 485PS2

or RS-422

D 485SD9R DB9 Female DB9 Female RS-485 2-wire -

E 485LPCOR DB25 Female DB25 Male RS-485 2-wire 485PS2

F 485SD9RJ DB9 Female RJ-11 RS-485 2-wire -

G 485DRJ DB9 Female (2) RJ-11 RS-485 2 or 4-wire -

H 4WSD9TB DB9 Female Terminal Block RS-485 2 or 4-wire 485PS

Why offer “optional” power supplies with port powered converters?

Simply put, all RS-232 ports are not created equal. Many laptop PC’s for example, deliberately reduce power to the RS-232 port to save the battery. And, if you are working at the distance limits of RS-422 or 485, you might need an extra boost. For the majority of applications though, port power is all our efficient converters need to get the job done. We just want to be sure that you’re covered, no matter what.

***Add in Pictures.

Port Powered RS-422 Converters

The fast and easy way to serial conversion

Extend data signals up to 4,000 feet (1.2 km)

• Change TD and RD RS-232 signals to balanced RS-422 signals

• Automatic Send Data Control – no software drivers to install or manage

• Baud rates up to 115.2 kbps

Convert RS-232 TD and RD signals to RS-422, allowing range to be increased from the 50 feet (15 m) specified in the RS-232 standard to 4,000 feet (1.2 km) at data speeds up to 115.2 kbps. No handshake driver control is required since the RS-422 driver and receiver are always enabled. These models do not require an external power supply. They draw power from the RS-232 handshake lines. If handshake lines are unavailable, choose Model 422PP9TB or 422LPCOR and connect a 12 VDC power supply to the terminal block.

Choose your port powered converter by interface/connector

Model RS-232 Connector RS-422 Connector Output Optional Power Supply

A 422PP9TB DB9 Female Terminal Block RS-422 422PS2

B 422PP9R DB9 Female DB9 Female RS-422 -

C 422LP25R DB25 Female DB25 Male RS-422 -

D 422LPCOR DB25 Female Terminal Block RS-422 422PS2

E 4WSD9R DB9 Female DB9 Female RS-422 or 485PS

RS-485 2 or 4-wire

F 4WSD9TB DB9 Female Terminal Block RS-422 or 485PS

RS-485 2 or 4-wire

G 485BAT3 DB9 Female Terminal Block RS-422 or (2) AAA batteries

RS-485 2 or 4-wire or 485PS2

*** Add in Pictures page 15 of the website.

Isolated In-line Serial Converters

Convert serial data and protect valuable equipment

Compact Isolated Serial Converters

Top of the line Modbus-compatible serial conversion and isolation in one compact case. Converts RS-232 to RS-422 or RS-485 (2 or 4-wire). 2000V 2-way optical isolation protects devices from power surges, spikes and ground loops. Automatic Send Data Control means that there are no software drivers to install or keep up with. Removable terminal blocks for RS-422/485 and external power make wiring easy. Accepts external power from 10-48VDC. Available with

female DB9 or DB25 RS-232 input.

Model No. RS-232 Connector

4WSD9OTB DB9 female

4WSD25OTB DB25 female

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485PS2 120 VAC to 12 VDC power supply

Isolated Serial Converter

Isolation and conversion at the right price

Our best value in isolated serial conversion. Converts RS-232 to RS-422 or RS-485 (2 or 4-wire) with 1500V isolation to

protect your devices. UL Listed. Requires 12VDC external power. Power supply sold separately below.

Model No. RS-232 Connector

485OI9TB DB9 female

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485PS2 120 VAC to 12 VDC power supply

RS-232 Line Repeaters

Amplify weak RS-232 signals

Double the range of your RS-232 data signal. Repeaters may be daisychained for extra range. Many computers, laptops, and some desktops ship with low-power ports that are unable to drive port-powered devices or full-length RS 232 cabling. Repeaters amplify these weak signals up to the RS-232 standard. Model 232LB9R is a 9-pin version, boosting all eight signal lines and carrying ground through. Model 232LB2 is a 25-pin version, boosting TD (Transmit Data), RD (Receive Data), RTS (Request to Send), CTS (Clear to Send), CD (Carrier Detect)

and DTR (Data Terminal Ready

Model No. Description

232LB9R 9-Pin RS-232 line repeater – DB9 F to DB9 M

232LB2 25-Pin RS-232 line repeater – DB25 F to DB25 M

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232PS 12 VDC @ 100 mA power supply

In-line Isolators and Repeaters

RS-422/485 Optically Isolated Repeater

Optically isolates and protects devices, plus it extends the range of RS-422 and 485 data lines an extra 4,000 feet. The versatile terminal blocks even let you join 2-wire RS-485 with RS-422 without the need for another converter – It’s like two devices in one.

Model No. Isolation

485OP 2,000V, 2-way optical

4-Channel RS-232 Optical Isolator

Protect up to 4 RS-232 channels. With its external power supply (item 232PS sold separately below), it’s ideal for

use with laptops that may have low-powered serial ports.

Model No. Isolation

9POP4 2,000V, 2-way optical

Port Powered RS-232 Optical Isolator

Our simplest and easiest to use isolator. It’s port powered, so it needs no external power supply – Just connect your

serial cables to the DB9 connectors and you’re protected with 2500 volts of optical isolation.

4KV RS-232 Optical Isolator

With 4,000 volts of isolation, you get twice the protection from lightning strikes, ground loops and accidental shorts than most other isolators. It even conforms to EN60601 specifications for industrial, hospital and medical applications. Port powered or use with optional power supply.

Model No. Isolation

232SPHI4 4,000V, 2-way optical

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