Shipping included*
Exclusions
Additional shipping fees may apply in rare circumstances for deliveries outside standard service areas. In most cases, this only potentially affects shipments to the Northwest Territories and Yukon, as well as certain heavy or oversized items.
Perle 27083264 PSI-MOS-RS485W2/FO 850 T Transceiver/Media Converter - 2 ST Ports - 850 nm Multi-mode Fiber - 4. 20 km
Business volume discounts
Technical guidance
Preparation & staging
QC · ON · AB · BC
Product Features
Technical Overview
This media converter operates at 850 nm wavelength on multi-mode fiber, supporting standard 50/125 µm and 62.5/125 µm core/cladding specifications. The 4.20 km maximum distance capability ensures reliable signal transmission across substantial physical spans without signal degradation.
The device features two duplex ST ports for fiber connectivity, with a total of three ports including the RS-485 interface. No RJ-45, DVI, USB, or management ports are present, keeping the design focused on serial-to-fiber conversion.
This section brings together practical product details such as Total Number of Ports, Network (RJ-45), DVI, Media Type Supported, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
This converter delivers optical fiber advantages to RS-485 networks, including immunity to electromagnetic interference and secure data transmission over longer distances. The dual ST port configuration supports redundant or dual-path fiber connections when needed.
Distance Extension
Extend RS-485 networks up to 4.20 km using multi-mode fiber, overcoming copper distance limitations while maintaining signal integrity.
- 4.20 km maximum distance
- 850 nm multi-mode fiber
- 50/125 µm and 62.5/125 µm compatibility
Industrial Durability
Designed for industrial environments with a compact, rail-mountable form factor that withstands vibration and fits standard DIN rails.
- Rail-mountable design
- Compact footprint
- Industrial temperature tolerance
Deployment / Use Cases
This transceiver/media converter is ideal for industrial automation systems where RS-485 devices need connectivity across large facilities or between buildings. Manufacturing plants, water treatment facilities, and transportation systems often use such converters to extend control networks beyond copper limitations.
The device also serves in building automation for connecting HVAC controllers, access control systems, and environmental sensors over fiber infrastructure. Telecommunications applications include extending serial console access to remote network equipment in data centers or telecom cabinets.
Industrial Automation
Connect PLCs, sensors, and controllers across factory floors or between buildings using fiber optic cabling for noise immunity and distance.
Building Management
Extend RS-485 networks for HVAC, lighting, and security systems in large commercial buildings or campuses with existing fiber infrastructure.
Physical Profile
The converter measures 3.90" (99 mm) in height, 1.38" (35 mm) in width, and 4.13" (105 mm) in depth, with an approximate weight of 7.41 oz (210.08 g). The rail-mountable form factor allows secure installation on standard DIN rails in industrial enclosures or network racks. The compact dimensions optimize panel space while providing robust fiber conversion capabilities.
- Width
- 1.38" (35 mm)
- Depth
- 4.13" (105 mm)
- Height
- 3.90" (99 mm)
- Weight
- 7.41 oz (210.08 g)
- Length
- 850 nm
What's in the Box
The package includes the PSI-MOS-RS485W2/FO 850 T transceiver/media converter unit and a 24VDC USA wall power adapter for immediate deployment.
Highlights
- Converts RS-485 to 850 nm multi-mode fiber optic signals
- Supports distances up to 4.20 km (2.61 miles)
- Two duplex ST ports for fiber connectivity
- Rail-mountable form factor for industrial installation
- Compatible with 50/125 µm and 62.5/125 µm fiber
- Includes 24VDC USA wall power adapter
- Environmentally compliant with RoHS, China RoHS, and REACH
- Manufactured in Germany with 1-year limited warranty
Specifications
| Specifications | |
|---|---|
| Manufacturer | Perle Systems, Inc |
| Manufacturer Part Number | 27083264 |
| Brand Name | Perle |
| Product Model | PSI-MOS-RS485W2/FO 850 T |
| Product Name | PSI-MOS-RS485W2/FO 850 T Transceiver/Media Converter |
| Packaged Quantity | 1 |
| Product Type | Transceiver/Media Converter |
| Interfaces/Ports | |
| Total Number of Ports | 3 |
| Network (RJ-45) | No |
| DVI | No |
| USB | No |
| Management Port | No |
| Number of ST Ports | 2 |
| ST Port Type | Duplex |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Fiber Mode Supported | Multi-mode |
| Fiber Optic Cable Wavelength | 850 nm |
| Maximum Distance Supported | 4.20 km (2.61 Mile) |
| Fiber Optic Cable Core/Cladding Specification | 50/125 µm,62.5/125 µm |
| Power Description | |
| Power Source | Power Supply |
| Physical Characteristics | |
| Form Factor | Rail-mountable |
| Height | 3.90" (99 mm) |
| Width | 1.38" (35 mm) |
| Depth | 4.13" (105 mm) |
| Weight (Approximate) | 7.41 oz (210.08 g) |
| Miscellaneous | |
| Package Contents | PSI-MOS-RS485W2/FO 850 T Transceiver/Media Converter 24VDC USA Wall Power Adapter |
| Environmentally Friendly | Yes |
| Environmental Compliance | China Restriction of Hazardous Substances (China RoHS),Restriction of Hazardous Substances (RoHS),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) |
| Country of Origin | Germany |
| Warranty | |
| Limited Warranty | 1 Year |
FAQ
What type of fiber does this converter support?
This converter supports 850 nm multi-mode optical fiber with 50/125 µm and 62.5/125 µm core/cladding specifications. It uses ST connectors for fiber termination and is designed for standard multi-mode fiber installations commonly found in industrial and enterprise environments.
What is the maximum distance this converter can support?
The maximum supported distance is 4.20 km (approximately 2.61 miles) when using compatible multi-mode fiber. This distance capability makes it suitable for extending RS-485 networks across large facilities, between buildings, or along industrial sites where copper cabling would face signal degradation.
How many ports does this converter have?
The converter has three total ports: two duplex ST ports for fiber optic connections and one RS-485 serial port. It does not include RJ-45 Ethernet, DVI, USB, or management ports, focusing specifically on serial-to-fiber conversion functionality.
What power supply is included with this converter?
The package includes a 24VDC USA wall power adapter that provides the necessary power for the converter. The device requires this external power supply for operation and is designed for standard North American electrical outlets.
Is this converter rack-mountable?
Yes, this converter features a rail-mountable form factor that allows installation on standard DIN rails commonly used in industrial control panels and network racks. The compact dimensions of 3.90" × 1.38" × 4.13" make it suitable for space-constrained installations while providing robust fiber conversion capabilities.
What environmental certifications does this product have?
This converter is environmentally friendly and complies with China Restriction of Hazardous Substances (China RoHS), Restriction of Hazardous Substances (RoHS), and Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulations. It is manufactured in Germany and includes a 1-year limited warranty for reliable performance.
| Qty | Price | Available |
|---|
