5 Pairs BIDI SFP Network Transceiver Module 1.25G - Single Fiber 20km

In this review the 5 Pairs BIDI SFP Network Transceiver Module is presented as a practical, budget-minded option for teams that need reliable single-mode fiber links without changing existing vendor hardware. The reviewer found the modules deliver on the core promise: up to 1.25 gigabit throughput with hot-swappable LC single-fiber interfaces that save fiber and rack space. For network engineers and small IT teams who need point-to-point runs to about 20 km, these modules provide straightforward deployment and strong compatibility with common switch brands.

Key Features

• Good Compatibility: Works with a wide range of mainstream vendors including Ubiquity, Netgear, Mikrotik, DLink and TPLink, easing integration into mixed networks.
• Single Fiber Transmission: BIDI design uses one fiber for transmit and receive (Blue TX1310nm/RX1550nm; Yellow TX1550nm/RX1310nm) to reduce fiber cabling and rack space by roughly half compared with duplex SFPs.
• High Reliability: Modules are subjected to a full aging test before shipment to reduce early-life failures and increase field reliability.
• Easy Installation: Hot-pluggable LC single fiber interface enables plug-and-play swaps that save time and minimize network downtime during upgrades.
• Max 20KM Deployment: Single-mode support to 20 km suits campus or inter-building links without needing additional repeaters or amplifiers.

Who It's For

The modules target network administrators and integrators who need cost-effective single-mode fiber links between switches, media converters, routers or firewalls up to 20 km apart. They are especially useful where conserving fiber strands or rack ports matters and for teams comfortable confirming TX/RX wavelength pairing.

Those managing HP or Aruba equipment should exercise caution since these SFPs are not recommended for those product lines; large enterprise environments that require vendor-certified optics or extended distance beyond 20 km may want to choose certified or higher-spec modules instead.

Pros & Cons

Pros

• Broad compatibility with many mainstream vendors simplifies mixed-vendor environments.
• Single-fiber BIDI operation cuts fiber and cabling costs and reduces rack congestion.
• Hot-swappable LC interface and plug-and-play setup reduce installation time.
• Pre-shipment full aging testing increases confidence in out-of-box stability.

Cons

• Not recommended for HP and Aruba gear, so compatibility must be verified before purchase.
• 20 km maximum range may be limiting for very long-haul or metropolitan deployments.

Specifications

Product Type	1.25 Gigabit BIDI SFP Transceiver
Interface	Single-mode LC single fiber
Wavelengths	Blue TX1310nm/RX1550nm; Yellow TX1550nm/RX1310nm
Data Rate	Up to 1.25 Gbps
Maximum Distance	Up to 20 km
Compatibility	Mainstream vendors: Ubiquity, Netgear, Mikrotik, DLink, TPLink
Testing	100% full aging testing before shipment

Our Verdict

The 5 Pairs BIDI SFP Module is a practical value buy for small to mid-size networks that need reliable single-fiber links to 20 km and broad vendor compatibility. It saves fiber and rack space while offering plug-and-play convenience, making it a good choice for IT teams who want dependable connections without premium vendor-certified optics.

Frequently Asked Questions

Will these SFPs work with any vendor switch?
They are compatible with most mainstream vendors like Ubiquity, Netgear, Mikrotik, DLink and TPLink, but they are not recommended for HP and Aruba products, so verify compatibility first.

Do I need two different modules for a link?
Yes, BIDI requires complementary pairs: one side must be the TX1310/RX1550 type and the other side the TX1550/RX1310 type for proper communication.

What is the maximum cable length supported?
The modules support single-mode fiber runs up to 20 km, suitable for most campus and inter-building connections.