Alternative to · LightWare SF45/B
LightWare SF45/B alternative: ERDI laser rangefinder modules compared
The LightWare SF45/B is a scanning LiDAR (a different category: not single-point). The ERDI modules below match it on interface and range class; every figure is the published one, with the LightWare SF45/B values copied from LightWare's own page on 2026-11-06.
What LightWare publishes for the LightWare SF45/B
- 50 m scanning LiDAR (vendor page)
Source: LightWare product page, captured 2026-11-06.
ERDI modules in the same class
| Model | Published range | Wavelength | Interface | Accuracy | Weight | Price |
|---|---|---|---|---|---|---|
| LRF22VB | 0.05–20 m (90% reflectivity); 0.05–10 m (10% reflectivity) | 905 nm | UART/IIC | ±5 cm (<5 m); 1% (≥5 m) | 1.5 g | From $8 per unit |
| LRF50H | 0.05–50 m (90% reflectivity); 0.05–15 m (10% reflectivity) | 905 nm | UART | ±5 cm (<10 m); 1% (≥10 m), 2σ | 15 ± 2 g | From $50 per unit |
| LRF50VB | 0.05–50 m (90% reflectivity); 0.05–20 m (10% reflectivity) | 905 nm | UART/IIC | ±5 cm (<5 m); 1% (≥5 m) | 1.3 g | From $20 per unit |
| LRF100H | 0.05–100 m (90% reflectivity); 0.05–30 m (10% reflectivity) | 905 nm | UART, IIC | ±10 cm (<10 m); 1% (≥10 m) | 20 ± 2 g | From $80 per unit |
How to compare fairly
Compare range on the same target reflectivity, check that the interface and logic level match your host, and compare the published single-unit price including shipping. ERDI prices and quantity bands are public on each model page; drivers for ArduPilot, ROS 2, Arduino and Raspberry Pi are open in erdi-lrf-drivers. The open module database holds both vendors' figures with sources.
FAQ
Which ERDI module is closest to the LightWare SF45/B?
By published range class and interface, the closest ERDI models are LRF22VB, LRF50H, LRF50VB. Check the range condition on each before deciding; the vendors quote different targets.
Which is the lowest-priced ERDI alternative to the LightWare SF45/B?
Among the models listed, the LRF22VB has the lowest published price, From $8 per unit with shipping included.
Which is the lightest ERDI alternative to the LightWare SF45/B?
The LRF50VB at 1.3 g is the lightest of the models listed.
Why does every range figure show a condition?
Vendors measure range on different targets (white board, building, 10 percent reflectivity) and in different visibility. A number without its condition cannot be compared, so this page lists the condition next to each range.
Related guides
Model records
Open the model page for the full specification table, downloads, published price and ordering.