UT-2577SM fiber optic modem supports asynchronous RS-232/485/422 communication. It is the best choice to connect remote terminal unit (RTU) with HOST or SCADA controller. It supports RS-232/485/422 asynchronous protocols; it can be mixed and matched to use 2 RS-232, RS-485 or RS-422 ports, and it supports 2 wires (half-duplex) RS-485 and 4 wires (full-duplex) RS-422 mode. The RS-485 mode supports data transmission (TXD or SD) control, this enhance the adaptation to most of the software. Optic fiber MODEM supports lots of optic connection between asynchronous serial ports. It supports 2 asynchronous serial devices to communicate under full-duplex or half-duplex via optic fiber; the communication distance can be as far as 4km at multimode, and 20km at single mode. The fastest transmission rate for RS-232 can be 115.2Kbps, and for RS-485/422 can be 460Kbps. Ports with different
electronic standards can be mixed and matched to use; it is without problem to connect RS-232 devices with RS-485/422 devices.
This is a good replacement of RS-232 to RS485/422 converter, which with EMI/RFT features.UT-2577SM supports two signal data transmission: transmit and receive data. At the same time, it is with RS-485/422 data
transmission auto control circuit; Zero delay conversion; all the serial ports is connected via terminal block.
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UOTEK Fiber Transceiver RS232 RS485 RS422 20KM SC Port RS-232 RS-485 RS-422 to Fibre-optical Converter UT-2577SM UT-2578SM
$288.96
Sale price
$288.96
Regular price
$0.00
Description
SPECIFICATIONS
Brand Name: NONE,UOTEK
Fiber optic port: optional SC, FC, ST
High-concerned chemical: none
Input voltage: DC9-48V 200mA
Model Number: UT-2577SM UT-2578SM
Operating temperature: -40℃ to 85℃
Origin: Mainland China
Place of Origin: Guangdong, China
Product name: RS-232/485/422 Single-Mode Single Fiber Optic MODEM
Transmission distance: 20km
Transmission rate: 460kbps
Type: Fiber optic media converter
protection: ±15KV ESD+600W surge protection

UOTEK Fiber Transceiver RS232 RS485 RS422 20KM SC Port RS-232 RS-485 RS-422 to Fibre-optical Converter UT-2577SM UT-2578SM
* Transmission distance: 20km
* Point to point or loop circuit (point to multi point) connection
* Supports RS-232, RS-422, RS-485 asynchronous protocol
* RS-232, RS-422/485 working at the same time
* Supports 2 bits (half-duplex) & 4 bits (full-duplex) RS-485 operating mode
* Transmission rate: 460kbps max
* With optional SC, FC, ST interface
* Supports master-slave working mode
* Slave mode: can be used as Hub
* Point to point or loop circuit (point to multi point) connection
* Supports RS-232, RS-422, RS-485 asynchronous protocol
* RS-232, RS-422/485 working at the same time
* Supports 2 bits (half-duplex) & 4 bits (full-duplex) RS-485 operating mode
* Transmission rate: 460kbps max
* With optional SC, FC, ST interface
* Supports master-slave working mode
* Slave mode: can be used as Hub
Supports RS-232/RS-485/RS-422 port
Asynchronous transmission: point to point, 460kbps
Transmission distance: single mode 20,000/40,000m
Operating temperature: -40鈩� to 85鈩�
Operating wavelength: 1,310nm(multi-mode), 1,310nm, 1,550nm (single mode)
interface: RS-232: terminal block
RS-485/422: terminal block
Fiber optic port: with optional SC, FC, ST
RS-232 port: standard RS-232 3-pin terminal block, with ±15KV ESD protection. Max transmission rate can be 115.2kbps
Input voltage: DC9-48V 200mA
RS-485/422 Port: ±15KV ESD protection, provides with 600W surge protection to each bit
Asynchronous transmission: point to point, 460kbps
Transmission distance: single mode 20,000/40,000m
Operating temperature: -40鈩� to 85鈩�
Operating wavelength: 1,310nm(multi-mode), 1,310nm, 1,550nm (single mode)
interface: RS-232: terminal block
RS-485/422: terminal block
Fiber optic port: with optional SC, FC, ST
RS-232 port: standard RS-232 3-pin terminal block, with ±15KV ESD protection. Max transmission rate can be 115.2kbps
Input voltage: DC9-48V 200mA
RS-485/422 Port: ±15KV ESD protection, provides with 600W surge protection to each bit
UOTEK COMPANY
As an industrial IoT manufacturer, UTEK technology(UOTEK) has been founded in 2003, is a National High-Tech Enterprise, which focuses on R&D, manufacturing & sales of industrial Ethernet switches, serial device servers, smart remote I/O, wireless transmission devices, USB converters, serial converter etc. UOTEK is recognized as the leading industrial Ethernet communication solution supplier in China; the products have a wide range of application in electric systems, railway/traffic, intelligent medical systems, industrial automation, power environment, security system.
UOTEK is the enterprise and university cooperation including Tsinghua University & Jinan University, which attracts lots of top specialists & R&D personnel on industrial networking communication around the world. We have advanced technology, intellectual property rights, the patent for invention & appearance, and software copyrights.
UOTEK grows rapidly after establishing. The products of the ethernet industry have lots of application on electrical systems, rail transit, banking system, IoT, intelligent medical, industrial automation, information smart management system, power environment,and security system, etc.
UOTEK passed certification ISO9001:2008, ISO14001, RoHS, FCC, CE, and other domestic/international communication certifications.
UOTEK is the enterprise and university cooperation including Tsinghua University & Jinan University, which attracts lots of top specialists & R&D personnel on industrial networking communication around the world. We have advanced technology, intellectual property rights, the patent for invention & appearance, and software copyrights.
UOTEK grows rapidly after establishing. The products of the ethernet industry have lots of application on electrical systems, rail transit, banking system, IoT, intelligent medical, industrial automation, information smart management system, power environment,and security system, etc.
UOTEK passed certification ISO9001:2008, ISO14001, RoHS, FCC, CE, and other domestic/international communication certifications.
UOTEK is the first ethernet switch manufacturer to use four-dimensional standards on safe connection, which provides safe data chain connection and full solution, and drive up the development of industrial 4.0
FAQ:
1. Are you a factory or trading company?
We are a manufacturer which focuses on industrial automation since 2003.
2. Can you accept small order?
Yes, we can accept small order or sample order.
3. What’s the Payment?
Normally we accept T/T, Paypal payment. Or if you want to use other payments, please feel free to contact with us.
4. What is your lead time?
If the products are in stock, lead time is within 1-3 days( Except holidays). If without stock, estimated lead time will be 20-30 days.
5. What about your after-sales service?
We provide with 1year to 3 years warranty for different products. You can contact with us by e-mail or phone call for after-sales
service.
6. Can you arrange the shipment?
Yes, we can arrange the shipment according to your requirement.
7. Can you offer ODM/OEM service?
Yes, we can. We offer this service to the customers for more than 10 years. We have full experience on this.
We are a manufacturer which focuses on industrial automation since 2003.
2. Can you accept small order?
Yes, we can accept small order or sample order.
3. What’s the Payment?
Normally we accept T/T, Paypal payment. Or if you want to use other payments, please feel free to contact with us.
4. What is your lead time?
If the products are in stock, lead time is within 1-3 days( Except holidays). If without stock, estimated lead time will be 20-30 days.
5. What about your after-sales service?
We provide with 1year to 3 years warranty for different products. You can contact with us by e-mail or phone call for after-sales
service.
6. Can you arrange the shipment?
Yes, we can arrange the shipment according to your requirement.
7. Can you offer ODM/OEM service?
Yes, we can. We offer this service to the customers for more than 10 years. We have full experience on this.

Free Shipping Over $199
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
30-Day Return Policy
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
Why Choose Us?
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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