These devices scan their environment using a quickly-rotating laser measurement beam. Objects can thereby be detected both directly in front of the device as well as at long distances and their contours measured. With an opening angle of 190° and a measurement distance of up to 65 m, the laser scanner can monitor an area of one hectare. Measurement data is output via a serial or Ethernet interface. The optional heating makes the scanner suitable for operation at temperatures as low as -20°C. The scan speed is up to 50 Hz.