Ubiquiti UF-SM-10G
Ubiquiti · SFP+ transceiver, 10GBASE-LR · UF-SM-10G
what it is
A 10GBASE-LR transceiver (Ubiquiti) in the SFP+ form factor, part number UF-SM-10G. Works over two single-mode (SM) fibers (duplex), 1310 nm. Reach per manufacturer: 10 km. Units examined: 13.
what we read from it
The transceiver has optical diagnostics (DOM): the switch reads temperature, supply voltage, laser bias current, transmit power and receive power from it. This makes an aging laser or a dirty connector visible before the link starts losing data.
Reading confirmed in switches: UniFi Switch Pro 24 PoE, UniFi Switch 48 750W, UniFi Switch Pro 48 PoE and UniFi Switch Aggregation Pro.
how we checked
The result depends on what the transceiver was read with — the same switch model in a different installation can show different data. That is why each reading is recorded separately:
- UniFi Switch 48 750W, firmware
7.4.1.16850— transceiver fields in the UniFi controller, 2026-10-17: diagnostics read (1 unit). Visible data: temperature, supply voltage, laser bias current, transmit power, receive power, transmitter fault indication (TX_FAULT), standard (compliance code), identity (manufacturer, part number, serial number, revision). Cable test (production link at the customer site): link comes up 1 of 1; diagnostics consistent with the other end of the link 1 of 1; alarm after unplugging not checked — we do not unplug at the customer site. - UniFi Switch Aggregation Pro, firmware
7.4.1.16850— transceiver fields in the UniFi controller, 2026-10-17: diagnostics read (8 units). Visible data: temperature, supply voltage, laser bias current, transmit power, receive power, transmitter fault indication (TX_FAULT), standard (compliance code), identity (manufacturer, part number, serial number, revision). Cable test (production link at the customer site): link comes up 8 of 8; diagnostics consistent with the other end of the link 8 of 8; alarm after unplugging not checked — we do not unplug at the customer site. - UniFi Switch Pro 24 PoE, firmware
7.4.1.16850— transceiver fields in the UniFi controller, 2026-10-17: diagnostics read (1 unit). Visible data: temperature, supply voltage, laser bias current, transmit power, receive power, transmitter fault indication (TX_FAULT), standard (compliance code), identity (manufacturer, part number, serial number, revision). Cable test (production link at the customer site): link comes up 1 of 1; diagnostics consistent with the other end of the link 1 of 1; alarm after unplugging not checked — we do not unplug at the customer site. - UniFi Switch Pro 48 PoE, firmware
7.4.1.16850— transceiver fields in the UniFi controller, 2026-10-17: diagnostics read (3 units). Visible data: temperature, supply voltage, laser bias current, transmit power, receive power, transmitter fault indication (TX_FAULT), standard (compliance code), identity (manufacturer, part number, serial number, revision). Cable test (production link at the customer site): link comes up 3 of 3; diagnostics consistent with the other end of the link 3 of 3; alarm after unplugging not checked — we do not unplug at the customer site.
The same transceiver in other switches and a comparison with other models: what each device shows.
what we cannot read
- Manufacturer alarm thresholds — the switches that read it do not pass them on. The thresholds are in the transceiver memory and are shown e.g. by a Cisco switch.
- Manufacturing date and wavelength — not visible when read through the controller; they are in the transceiver memory.
parameters the transceiver returns
The list shows WHAT the device exposes — including parameters we do not use ourselves. There are no values here at all: it is a catalog of capabilities, not a reading from anyone's network. It is not a closed list either — explanation below the table.
11 parameters
| parameter | type |
|---|---|
moc_nadawana | number (dBm) |
moc_odbierana | number (dBm) |
napiecie_zasilania | number (V) |
numer_czesci | text — part number (PN) |
numer_seryjny | text |
prad_lasera | number (mA) |
producent | text — vendor name from transceiver memory |
rewizja | text |
temperatura | number (°C) |
usterka_nadajnika_tx_fault | boolean |
zgodnosc | text — standard (e.g. 1000BASE-LX) |
This is not a closed list. It comes from reading a unit we had access to — it shows what we managed to retrieve, not everything the device can return. A different firmware version, hardware variant or reading path can expose fields that are not here. If you are interested in a specific unit and a specific value — please ask; there is a good chance it can be obtained, even if you do not see it below.
List source: reading of 13 working units (as of 2026-10-19). The list is the sum of what we observed — more units reveal more parameters, so numbers for different models are not directly comparable.