Condition: Used

The EXFO FLS-300-23BL-EI is a used singlemode fibre optic light source in good working condition. Configured for 1310 nm and 1550 nm laser output on a 9/125 µm singlemode fibre, it is supplied with an SC adapter fitted.

Supplied with:
• SC adapter

The EXFO FLS-300 is a handheld fibre optic light source forming part of EXFO's FPM-300/FLS-300/FOT-300 test platform. The model FLS-300-23BL is configured for dual singlemode wavelengths (1310/1550 nm) and is designed for insertion loss, optical return loss, and passive optical network (PON) testing in FTTx, FTTH, and FTTP environments.

The instrument transmits using a wavelength-identification digital encrypted protocol, enabling any compatible unit — including the FPM-300 Power Meter and FOT-300 Optical Loss Test Set — to automatically apply correct calibration parameters. Signal encrypting also supports distant referencing, allowing power reference values to be communicated between technicians at remote locations. The FLS-300 supports PON testing at 1310 nm, 1490 nm, and 1550 nm in compliance with ITU-T G.983 and G.984 recommendation series and IEEE 802.3ah.

SPECIFICATIONS (Model 23BL):
Central Wavelengths: 1310 ± 20 nm / 1550 ± 20 nm
Fibre Type: Singlemode 9/125 µm
Spectral Width: ≤5 nm
Output Power: ≥1 dBm / ≥1 dBm
Power Stability (8 hours): ±0.10 dB
Tone Generation: 270 Hz, 1 kHz, 2 kHz
Auto-Wavelength Recognition: Yes
Battery Life: 120 hours (3 × AA alkaline batteries)
Connector System: EXFO Universal Interface (EUI) — twist-on adapter
Operating Temperature: –10 °C to +50 °C
Storage Temperature: –40 °C to +70 °C
Relative Humidity: 0% to 95% non-condensing
Dimensions (H × W × D): 18.5 cm × 10.0 cm × 5.5 cm
Weight: 0.4 kg
Warranty / Calibration Interval: 3 years

EXFO FLS-300 Light Source Spec Sheet (official EXFO PDF): Download PDF

EXFO FLS-300 Light Source Spec Sheet v12 (ProFiber hosted PDF): Download PDF

EXFO FPM-300 / FLS-300 User Guide (PDF via fs.com): Download PDF

EXFO FLS-300 Datasheet (PDF via fs.com): Download PDF

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is 'not as specified', you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.