A laser rangefinder module arduino for an UAV that can measure distances up to 2 kilometers, laser distance sensor 2km is quite specialized and may not be readily available as an off-the-shelf product due to the complexity and cost associated with such long range sensors. It can integrated with smart measuring device in your project.
Regulatory Considerations: Using lasers for long ranges distance measurement can have legal and safety implications. In many countries, there are regulations regarding the use of high power lasers in unmanned aerial vehicles due to potential eye damage risks and interference with air traffic.
If your application absolutely require a more 2km range, you might consider using a JRT infrared 905nm laser rangefinder module or 1535nm laser rangefinder module, eye-safe laser rangefinder module combined with other navigation techniques such as GPS, inertial measurement units (IMUs), and image recognition for achieved more measurement applications.
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