Publicly stated differences
Not bench tested: the facts below are manufacturer-published claims. Fiber Tool Lab has not verified accuracy, runtime, durability, or the consistency of Y9 configurations.
Swipe horizontally to compare all columns.
| Model | Publicly stated position | Confirmed public claims |
|---|---|---|
| G11 | Optical power meter | Nine selectable wavelengths: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, and 1625 nm. The page calls out added 5G measurement wavelengths. |
| Y9 | All-in-one field tool | Public catalog/download references describe optical power measurement, VFL, and RJ45 cable testing. Public naming and bundled functions are not fully consistent across pages. |
See what each G11 wavelength is used for
Read the full Y9 vs Jonard FPM-50S buyer decision guide
What remains unverified
- G11 range, accuracy, detector, adapters, calibration, and battery behavior.
- Y9 exact variant, full function set, wavelength list, range, interfaces, and whether different catalog names represent the same hardware.
- Repeatability, warm-up drift, display behavior, connector fit, charging, runtime, and warranty terms for both products.
Who should consider each
Consider G11 when the purchase is centered on optical power measurement and you prefer a dedicated workflow. Investigate Y9 when one device may replace several field tools, but require the supplier to identify the exact configuration in writing.
Primary public sources
- Kaiteng G11 product page, accessed July 21, 2026.
- Kaiteng download center with Y9 manual listing, accessed July 21, 2026.
- Guangyan product catalog, accessed July 21, 2026.