The OL-DA sensor series consists of  small size distance meters. The maximum measurable range is 20 meters and the accuracy in standard conditions is 1mm.

The OL-DB series consists of medium range distance sensors, up to 80 meters. The maximum measurable range is 80 meters and the accuracy in standard conditions is 1mm.

The OL-DC series is the top-of-the-range series of laser distance measurers. Each sensor is equipped with an OLED display through which it is possible to program 2 outputs. it is possible to set a distance and program an optoisolated output.