The LDM 41/42 is an opto-electronic distance measuring module designed for industrial use. It works based on the phase comparison (amplitude modulation) principle.

Measurement is performed with spot accuracy, because the laser beam features a divergence as small as 0.6 mrd.
The laser operates at a wavelength range of 650 nm (red) and can easily be directed onto a target surface. The laser qualifies for laser class 2 requirements under 2 DIN EN 60825-1:2001-11.
Measured values are output via RS 232 / 422 interface (switchable). Connection to an industrial bus is possible.