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What is an alternative to the HENSOLDT LP19D laser rangefinder?

The LP19D is a finished optical module for integration into observation sights. An alternative is either another finished module or a bare rangefinder module plus your own optics. This catalogue covers the second path: 1535 nm modules from 14 g and 3 km up to 410 g and 23 km, with UART-TTL, RS-422, RS-232 or CAN output, documented against the manufacturer's own test conditions.

Matching modules from the catalogue

Model	Wavelength	Published range	Accuracy	Mass	Interface
LRF1829C	1535 nm	23 km	±2 m	400 g	RS-422
LRF1830C	1.54 µm	23 km	±2 m	400 g	UART + RS-422
LRF1525C	1.54 µm	15 km	±2 m	400 g	RS-422
LRF1221C	1.54 µm	12 km	±2 m	275 g	RS-422
LRF1222C	1.54 µm	12 km	±2 m	335 g	RS-422
LRF1831C	1535 nm	12 km	±2 m	410 g	RS-422

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
LRF1525C — 4m × 6m Objective ≥15 km
LRF1221C — 4m × 6m Objective ≥12 km
LRF1222C — Reference target(2.3m × 2.3m) ≥12 km
LRF1831C — a) Under line-of-sight conditions, with visibility not less than 15 km and humidity not greater than 80% (at 30 °C), the ranging distance for Target 1 (5 m × 15 m) is ≥ 6,500 m. b) Under line-of-sight conditions, with visibility not less than 15 km and humidity not greater than 80% (at 30 °C), the ranging distance for a target with diffuse reflectance not less than 30% (20 m × 20 m) is ≥ 12,000 m.

Full detail and the manufacturer's original wording: LP19D comparison · all 59 range conditions · filter the catalogue yourself

Questions people ask about this

Is a module really a drop-in replacement?

No. A finished module includes optics, housing and its own interface; a bare module does not. Replacing one with the other is an optical and mechanical design task, not a swap.

What do I need to compare?

Wavelength, range with its test condition, mass, interface and update rate. The comparison page puts the published figures side by side and refuses to fill the gaps the manufacturer leaves.

Can you supply the interface protocol?

Yes, on request with the model code. Framing, checksum and error codes are the part that decides whether an integration succeeds.

Send the requirement, not a part number Target size, reflectance, required range, mass budget, interface, quantity. Two candidates and their limiting factor come back. Email tommy@erdimail.com All answers

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.