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[F-MM850-550M-1.25G] Grandstream F-MM850-550M-1.25G SFP Fiber Module, Multi-Mode, 850nm, 550m, 1.25Gbps

Grandstream F-MM850-550M-1.25G SFP Fiber Module, Multi-Mode, 850nm, 550m, 1.25Gbps

Part number F-MM850-550M-1.25G
  • 1.25Gbps SFP hot-pluggable small form-factor transceiver
  • Multi-Mode Fiber, 850nm nominal wavelength
  • Transfer distance up to 0.55km on 50/125µm (OM2) and 0.3km on 62.5/125µm (OM1) multi-mode fiber
  • Duplex LC connector
  • I2C integrated Digital Diagnostic Monitoring (DDM)
  • Low power consumption: max 0.8W
  • Very low EMI and excellent ESD protection
Gigabit Fiber Grandstream SFP
Price
⃁ 42.19 ⃁ 42.19 ⃁ 84.37 Save 50%
⃁ 42.19 ⃁ 84.37
(Tax excluded)
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  • Delivery within 4–10 business days across Saudi Arabia
  • Warranty according to the manufacturer
  • Tax invoice with every order
  • Technical support before and after purchase

Not sure this model fits your setup? Read the buying guide

Official datasheetGrandstream_SFP_Fiber_Modules_Datasheet.pdf Download

Overview of Grandstream F-MM850-550M-1.25G

The Grandstream F-MM850-550M-1.25G is a hot-pluggable SFP small form-factor fiber transceiver for 1.25Gbps Ethernet links over multi-mode fiber at 850nm. Like all Grandstream fiber modules, it integrates a high-sensitivity PIN receiver and signal conditioner, supports integrated Digital Diagnostic Monitoring over I2C, and offers very low EMI, excellent ESD protection and low power consumption. It uses a duplex LC connector and complies with SFF-8472, SFP MSA, IEEE 802.3z. It is ideal for enterprise LAN networks and other optical links, such as short-range links inside server rooms, between racks and between floors in offices, hotels, schools, warehouses and campuses. Use it with multi-mode fiber cable of the matching wavelength.

Technical Specifications – Grandstream F-MM850-550M-1.25G

Optical

Fiber ModeMulti-Mode Fiber
Connector TypeDuplex LC
DDMYes, I2C for integrated Digital Diagnostic Monitoring
Nominal Wavelength850nm

Performance

Data Rate1.25Gbps SFP

Power

Max Power Consumption0.8W

Performance

Transfer Distance50/125µm (OM2): 0.55km; 62.5/125µm (OM1): 0.3km

Optical

TX Power-10 to -3dBm, ±3dB
RX Power-18 to -3dBm, ±3dB

Power

Operation Voltage3.3V±0.3V

Environmental

EnvironmentalOperation: 0℃ to 70℃, humidity: 5% to 85%; Storage: -40℃ to 85℃

Physical

Unit Weight15.80g

Compliance

StandardsSFF-8472, SFP MSA, IEEE 802.3z, RoHS-6
ComplianceFCC, CE, FDA

Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.

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PRACTICAL ANSWERS

Network planning questions

Should I choose a router, a switch or an access point?

Start with the task: connecting networks, adding wired device ports, or providing wireless coverage. A single installation may need more than one device type. Share a site diagram and device list so the proposed roles and connections are clear.

Why is wireless coverage weak in some rooms?

Check the access point location, building layout, obstacles and the number of active devices. Measure coverage where people actually work before choosing extra equipment; changing the internet package alone may not address a coverage problem.

How do I select a switch for powered network devices?

List the devices to be connected and check each device’s power requirements against the switch’s per-port capability and total documented power budget. Also review uplink capacity and reserve ports for the expansion you actually expect.

Can the guest network be separated from business devices?

Define which devices and services guests should be able to reach, then check whether the router, switch and access points support the required separation. Test the resulting access rules; a different wireless network name alone is not the acceptance test.

What information helps plan a network upgrade?

Provide floor plans, current equipment models, internet connections, cabling details and peak device counts. Describe the applications that matter most and the observed problem, such as disconnections or slow local file access.

How should network performance be checked after installation?

Agree on the locations and representative workloads to test, then record wired and wireless results separately. Check connectivity, coverage and access rules during normal use, and retain a diagram and configuration backup for support.

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