RS232 / RS485 / RS422 Isolators/ Isolated Converters
From 3-wire to 7-wire RS232 isolators, 2-wire RS485 to 4-wire RS422 / RS485 isolators, and USB isolators to USB / RS232 / RS485 / RS422 optically-isolated converters, CommFront has all the industrial-grade optical-isolation devices to protect your assets from the unexpected. If off-the-shelf product does not provide enough security for you, we can even tailor-make the devices, which are customizable right down to the nuts and bolts.
SAFETY
WORLD-CLASS TESTING LABS
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
QUALITY
ISO 9001 STANDARDS
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
WARRANTY
100% SATISFACTION
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
RS232 Isolator | RS232 Opto-Isolator (3-Wire / Industrial / Port-Powered)
- Rugged industrial-grade port-powered 3-wire RS232 opto-isolator.
- 5000V optical isolation.
- Port-powered, no external power or RTS, DTR required.
- 300 to 38.4K Baud operation (auto-sensing & self-adjusting).
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Industrial grade enclosed in a rugged, rustless ABS housing.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- No software drivers, DIP switch or jumper settings 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.
$35.95
In Stock
High-Speed RS232 Isolator (3-wire / Industrial / 5VDC-Powered)
- Rugged industrial-grade high-speed 3-wire RS232 opto-isolator
- 5000V optical isolation.
- External 5V DC powered, no port power from the RS232 port is required.
- 300 to 115,200 bps (high speed, auto-sensing & self-adjusting).
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Industrial grade enclosed in a rugged, rustless ABS housing.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- No software drivers, DIP switch or jumper settings 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.
$38.95
In Stock
RS232 Isolator | RS232 Opto-Isolator (7-Wire / Industrial / Port-Powered)
- Rugged industrial-grade port-powered 7-wire RS-232 isolator.
- 2500V optical isolation.
- Port-powered, no external power or RTS, DTR required.
- 300 to 19.2K Baud operation (auto-sensing & self-adjusting).
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Industrial grade enclosed in a rugged, rustless ABS housing.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- No software drivers, DIP switch or jumper settings 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.
$59.95
In Stock
Opto-Isolated RS232 to RS485 Converter (Industrial / Port-Powered)
- Rugged industrial-grade port-powered opto-isolated RS232 to RS485 converter.
- Converts RS232 to 2-wire RS485 and vice versa.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation.
- Supports multi-drop RS485 networks (up to 64 nodes).
- 1.2K to 57.6K Baud operation (auto-sensing & self-adjusting).
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Accepts external 5V DC regulated power if the port-power is insufficient.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no software drivers or flow control is required.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- Built-in 600W surge protection, 15kV static protection and circuit protection.
- ALL-IN-ONE rugged terminal block designed for different requirements.
- 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.
$54.95
In Stock
Opto-Isolated RS232 to RS422 Converter (Industrial / Port-Powered)
- Rugged industrial-grade port-powered opto-isolated RS232 to RS422 converter.
- Converts RS232 to 4-wire RS422 and vice versa.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation.
- Supports multi-drop RS422 networks (up to 64 nodes).
- 1200 to 38.4K Baud operation (auto-sensing & self-adjusting).
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Accepts external 5VDC regulated power if the port-power is insufficient.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no flow control is required.
- ALL-IN-ONE rugged terminal block designed for different requirements.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- 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.
$54.95
In Stock
Opto-Isolated RS232 to RS485 / RS422 Converter (Industrial / Port-Powered)
- Rugged industrial-grade port-powered opto-isolated RS232 to RS485 / RS422 converter.
- Converts RS232 to 2-wire RS485, 4-wire RS485 or 4-wire RS422 and vice versa.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation.
- Supports multi-drop RS485 / RS422 networks (up to 64 nodes).
- 1.2K to 38.4K Baud operation (auto-sensing & self-adjusting).
- Temperature range: -40ºF to 185ºF (-40ºC to 85ºC).
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no software drivers or flow control is required.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- Built-in 600W surge protection, 15kV static protection and circuit protection.
- Accepts external 5VDC regulated power if the port-power is insufficient.
- ALL-IN-ONE rugged terminal block designed for different requirements.
- 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.
$59.95
In Stock
25-pin Opto-Isolated RS232 to RS485 / RS422 Converter (Industrial / Port-Powered)
- 25-pin rugged industrial-grade port-powered opto-isolated RS232 to RS485 / RS422 converter.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation effectively protects your RS232 devices from ground loops, transient surges, remote lightning and spikes.
- Converts 25-pin RS232 to 2-wire RS485 or 4-wire RS485 / RS422 and vice versa.
- Supports multi-drop RS485 / RS422 networks (up to 64 nodes).
- 1.2K to 38.4K Baud operation (auto-sensing & self-adjusting).
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no software drivers or flow control is required.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Built-in surge protection (600W), static protection (15kV), and circuit protection.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- Accepts external 5VDC regulated power if the port-power is insufficient.
- ALL-IN-ONE rugged terminal block designed for different requirements.
- 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.
$69.95
In Stock
Isolated RS232 to RS485 / RS422 High-Speed Converter (Industrial)
- High-speed rugged industrial-grade opto-isolated RS232 to RS485 / RS422 converter.
- Converts RS232 to 2-wire RS485, 4-wire RS485 or 4-wire RS422 and vice versa.
- External 9-30VDC powered (included), no port power from the RS232 port required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation.
- Supports multi-drop RS485 / RS422 networks (up to 128 nodes).
- Direct DIN-Rail (Rack) or Wall / Panel mounting (stackable).
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
- RS-485 / RS-422 auto-detection, no manual setting is required.
- No software drivers, flow control, DIP switch or jumper settings required.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no flow control is required.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Built-in 600W surge protection, 15kV static protection and circuit protection.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- Safety: Strictly certified by TUV (Cert No. SG-CE-100005; SG-FCC-100002).
- 5-year manufacturer's warranty.
$97.95
In Stock
RS485 / RS422 Isolator / Repeater / Converter (Industrial)
- Rugged industrial-grade RS485 / RS422 isolator / repeater / converter.
- Isolates one group of RS485 / RS422 equipment from another.
- Converts 2-wire RS485 to 4-wire RS422 and vice versa.
- Extends RS485 or RS422's distance.
- 2500V optical isolation.
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
- RS-485 / RS-422 auto-detection, no software drivers or manual setting is required.
- External 9-30VDC powered (included).
- Industrial grade enclosed in a rugged, rustless ABS housing.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no flow control is required.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Built-in 600W surge protection, 15kV static protection and circuit protection.
- Direct DIN-Rail (Rack) or Wall / Panel mounting (stackable).
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- Safety: Strictly certified by TUV (Cert No. SG-CE-100004; SG-FCC-100001).
- 5-year manufacturer's warranty.
$119.95
In Stock
Opto-Isolated RS485 Hub / Splitter (Industrial)
- Rugged industrial-grade opto-isolated RS485 hub / splitter
- Expands RS-485 networks by splitting one (1) RS-485 network into four (4), thus making star-wiring possible for RS-485 networks
- Supports multi-drop RS485 networks (up to 512 [4x 128] nodes)
- Supports BACnet and Modbus (multiple masters or slaves)
- Multiple HUB-485-4 can be connected for expanding the RS485 system
- 2500V optical isolation
- The failure of any individual loop will not affect the others, making the RS-485 network more robust and reliable
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting)
- Direct DIN-Rail (Rack) or Wall / Panel mounting (stackable)
- External 9 to 30VDC powered (included)
- Industrial grade enclosed in a rugged, rustless ABS housing
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting)
- Data direction auto-turnaround, no software drivers or flow control is required
- No DIP switch or jumper settings needed
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC)
- 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-100004; SG-FCC-100001)
- 5-year manufacturer's warranty
$149.95
In Stock
Opto-Isolated RS232/RS485/RS422(4-Wire) Hub / Splitter (Industrial)
- Rugged industrial-grade opto-isolated RS-232 and 4-wire RS-485/RS-422 hub/splitter.
- Expands 3-wire RS-232 or 4-wire RS-485/RS-422 networks by splitting one network into four, thus making star-wiring possible for RS-485/RS-422 networks.
- Supports multi-drop RS-485/RS-422 networks (up to 512 [4x 128] nodes).
- Multiple HUB-485-4 can be connected for expanding the RS-485/RS-422 networks.
- 2500V optical isolation.
- The failure of any individual loop will not affect the others, making the RS-485/RS-422 network more robust and reliable.
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
- Wall / Panel mounting.
- External 5VDC powered (included).
- Industrial grade enclosed in a rugged, steel housing.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no software drivers or flow control is required.
- No DIP switch or jumper settings needed.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Built-in 600W surge protection, 15kV static protection, and circuit protection.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- CE/FCC compliant.
- 5-year manufacturer's warranty.
$187.95
In Stock
Opto-Isolated 8-Port RS485 Hub / Splitter (Industrial)
- Rugged industrial-grade opto-isolated RS485 hub / splitter
- Expands RS-485 networks by splitting one (1) RS-485 network into eight (8), thus making star-wiring possible for RS-485 networks
- Supports multi-drop RS485 networks (up to 1,024 [8x 128] nodes)
- Supports BACnet and Modbus (multiple masters or slaves)
- Multiple HUB-485-8 can be connected for expanding the RS485 system
- 2500V optical isolation
- The failure of any individual loop will not affect the others, making the RS-485 network more robust and reliable
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting)
- Direct DIN-Rail (Rack) or Wall / Panel mounting (stackable)
- External 9 to 60VDC powered (included)
- Industrial grade enclosed in a rugged, rustless ABS housing
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting)
- Data direction auto-turnaround, no software drivers or flow control is required
- No DIP switch or jumper settings needed
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC)
- Built-in 600W surge protection, 15kV static protection and circuit protection
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards
- Safety: CE/FCC compliant
- 5-year manufacturer's warranty
$297.95
In Stock
RS232 Opto-Isolator (3-Wire / Industrial / Port-Powered / Custom-made with Reversed Bolts and Nuts)
- Note: This is a custom-made product of CVT-232A-3 with reversed bolts and nuts.
- Rugged industrial-grade port-powered 3-wire RS232 opto-isolator.
- 5000V optical isolation.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 300 to 38.4K 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, DIP switch or jumper settings 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.
$36.95
In Stock
RS232 Opto-Isolator (7-Wire / Industrial / Port-Powered / Custom-made with Reversed Bolts and Nuts)
- Note: This is a custom-made product of CVT-232B-3 with reversed bolts and nuts.
- Rugged industrial-grade port-powered 7-wire RS-232 isolator.
- 2500V optical isolation.
- Port-powered, no external power or RTS, DTR required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 300 to 19.2K 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, DIP switch or jumper settings 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.
$60.95
In Stock