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Which laser rangefinder module has a published 20 km range, and what is the datasheet condition?

Two models in this catalogue publish above 20 km: LRF1829C and LRF1830C at 23,000 m. The figure is only valid for the target size, reflectance and visibility stated by the manufacturer, which is reproduced verbatim on each model page and in the open dataset. Without that condition a 20 km claim is not comparable to anything.

Matching modules from the catalogue

The conditions behind those numbers

• LRF1829C — a) Under line-of-sight conditions, with visibility not less than 26 km and humidity not greater than 50% (at 30 °C), the ranging distance for a vehicle target (3 m × 3 m) is ≥ 18,000 m. b) Under line-of-sight conditions, with visibility not less than 30 km and humidity not greater than 50% (at 30 °C), the ranging distance for a target with diffuse reflectance not less than 30% (6 m × 6 m) is ≥ 23,000 m.
• LRF1830C — ≥23,000 m to a 6 × 6 m diffuse target, reflectance ≥30%; line of sight; visibility ≥30 km; relative humidity ≤50% at 30 °C

Full detail and the manufacturer's original wording: range conditions table · all 59 range conditions · filter the catalogue yourself

Questions people ask about this

Is a 20 km rangefinder realistic?

Against a large, cooperative target in good visibility, yes — that is what these modules are built for. Against a 0.3 m drone in haze it is not, regardless of what the brochure says.

What target size do the 20 km figures assume?

The manufacturer's condition names it. The dataset keeps that sentence verbatim next to the number precisely because it varies between models.

Can I get the datasheet?

Yes — send the model code and the application, and the datasheet comes back with the condition it was measured under.

Figures transcribed from manufacturer pages on 2026-10-24. Conditions are quoted verbatim; nothing here extrapolates a range to a target the manufacturer did not test.