# LevelOne 1.25Gbps Single-mode SFP Transceiver 80km 1550nm

**URL:** https://aio.lv/en/product--levelone-sfp-3611--2114044
**Data updated:** 2025-12-29 10:38 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** LEVELONE
**Manufacturer code:** SFP-3611
**EAN:** 4015867155172
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 67.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 55.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--levelone-sfp-3611--2114044

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The LevelOne 1.25Gbps Single-mode SFP Transceiver supports a maximum data transfer rate of 1250 Mbit/s with an 80km range at 1550nm. It is designed for fiber optic connections and complies with EN 60825-1 safety standards. This compact transceiver operates at an input voltage of 3.3 V and is ideal for long-distance data transmission.

## Long description

LevelOne SFP-3611 is a single-mode SFP transceiver designed for long-distance fiber links. It supports Gigabit Ethernet data rates up to 1.25 Gbps over a single duplex fiber core, uses a 1550 nm DFB laser diode light source, and fits standard SFP ports with a duplex LC connector. The module is optimized for 9 µm single-mode fiber and can reach distances up to 80 km while operating from a single +3.3 V power supply and meeting relevant industry standards.
Advantages
The transceiver offers cost-effective long-reach connectivity with small form-factor pluggable compatibility, low power operation at +3.3 V, and compliance with IEEE 802.3z and MSA specifications. It uses a DFB laser for stable 1550 nm transmission, provides a clear AC-coupled differential electrical interface, and meets RoHS and EN 60825-1 (Laser Class 1) safety requirements.
Suitable for
Long-distance Gigabit Ethernet links up to 80 km over single-mode fiber
WAN/metro fiber connections requiring 1550 nm transmission
Network equipment with SFP ports (switches, routers, media converters)
Key specifications
Data rate: 1.25 Gbps (NRZ)
Wavelength: 1550 nm (DFB laser diode)
Maximum reach: up to 80 km on 9 µm single-mode fiber
Interface: SFP with duplex LC connector
Power supply: single +3.3 V
Standards: IEEE 802.3z, MSA compliant; EN 60825-1 (Laser Class 1); RoHS
How to use
Insert the SFP-3611 module into any compatible SFP slot on your network device until it clicks into place. Connect a duplex LC single-mode fiber cable (9 µm) and ensure proper Tx/Rx orientation. Power the host device with the standard supply; the transceiver requires no additional configuration or installation software. Monitor link status via the host device to confirm operational 1.25 Gbps connectivity.
Usage recommendations
Use single-mode 9 µm fiber with appropriate attenuation characteristics for 80 km links, verify LC connector cleanliness before mating, and follow your equipment vendor’s guidelines for SFP compatibility and eye-safety procedures per EN 60825-1.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Networking standards | IEEE 802.3z |
| Duplex system | Full |
| Wavelength | 1550 nm |
| Fiber ports quantity | 1 |
| Fiber optic connector | LC |
| Link budget | 23 dB |
| Maximum transfer distance | 80000 m |
| Fiber cable diameters supported (core/cladding) | 9/125 |
| Tx power (max) | 5 dBmW |
| Single-mode fiber (SMF) supported | Yes |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Features

| Feature | Value |
|---|---|
| Plug and Play | Yes |
| Hot-swap | Yes |

### Certificates

| Feature | Value |
|---|---|
| Certification | CE, FCC |
| Safety | EN 60825-1 |

### Power

| Feature | Value |
|---|---|
| Input voltage | 3.3 |
| Maximum current | 300 A |
| Maximum voltage | 6 V |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 85369010 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 35 g |
| Package depth | 20 mm |
| Package height | 65 mm |
| Package width | 106 mm |
| Number of products included | 1 pc(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.02 kg |
| Height | 13.7 mm |
| Width | 57 mm |
| Depth | 12 mm |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

## FAQ

### How much does the LevelOne 1.25Gbps Single-mode SFP Transceiver cost, and is it available for purchase?

The price is 67.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All LEVELONE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized LEVELONE service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, maximum data transfer rate, weight, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/2114044/54591364_large.webp