Product details
This product series is distributed by WM Tech and complies with industry-standard specifications. It is fully compatible with the entire MikroTik product lineup and other mainstream networking devices.
• All prices listed on this website are for hardware only. If setup or configuration services are required, please use the official LINE menu "Quick Access → Network Planning / Deployment" to submit your request.
📦 Return & Exchange Policy • Items must be brand new and kept in complete original packaging (including outer box, accessories, and manuals).
• Products that have been activated, configured, or show signs of use are not eligible for return.
• For returns not related to product defects, shipping costs are the responsibility of the customer. For defective products or shipping errors, round-trip shipping costs will be covered by our company.
• Refunds or replacements will be processed only after the returned item has been received, inspected, and approved.
• If there are special refund circumstances, please contact us directly so we can review and discuss the appropriate solution.
SFP-31SM20D is a Taiwan-made 1.25G SFP fiber module distributed by WM Tech. Designed with a 1310 nm wavelength, it is suitable for medium-to-long-distance single-mode fiber transmission and supports stable data links up to 20 km. Equipped with a Dual-LC connector and Full-Duplex communication, it is ideal for enterprise backbone networks, campus networks, industrial deployments, surveillance systems, and ISP access environments.
Positioned for 1 Gbps Ethernet networks, this model inherits the high compatibility and stability of the SFP family. It is especially suitable for deployments that require 1 Gbps performance while balancing cost efficiency and reliability, making it a practical option for single-mode medium/long-distance fiber links.
SFP-31SM20D includes DDM (Digital Diagnostics Monitoring), enabling real-time monitoring of key parameters such as optical power, voltage, temperature, and laser bias current. When values are abnormal or exceed defined thresholds, administrators can quickly assess device status and plan maintenance or upgrades in advance, improving network visibility and manageability.
This module complies with industry-standard SFP interface specifications and can be used with the full MikroTik product line as well as other mainstream networking devices with standard SFP ports. It is a dependable choice for enterprise, campus, and cross-site single-mode fiber connectivity.
Specifications
| Product code | SFP-31SM20D |
| Connector | Dual LC UPC |
| Data Rate | 1.25G |
| Distance | 20 KM |
| Format | SFP |
| Mode | SM |
| Tested ambient temperature | 0°C to 70°C |
| Wavelength | 1310 nm |
