M1220X laser rangefinder module rated to 20km: what it measures, the interface and power it needs, and the laser class to check first
This is an M1220X laser rangefinder module, offered as a component that measures the distance to a target at long range rather than as a handheld device, and modules of this class are normally built into a gimbal, a mast or a vehicle mount instead of being held. Before anything else, confirm the laser class and what your country allows: a module that reaches kilometres is not a toy, and eye safety plus airspace or site rules decide whether you may use it at all. The second question is the interface, because these modules talk over a serial link and the connector, the supply voltage and the protocol have to match the controller you already have, so ask for the pinout and the command set. Power behaviour matters too, since a module that needs a clean supply will misread when a battery sags. What it will not do is work as a plug-and-play accessory, and range, accuracy, wavelength and price all follow the configuration the seller quotes.