What range does a lastec concept DVD system lt1 20.20 speedscope have?

The Lastec Concept DVD System is a combination of the Laser speed gun and a DVD recording system. The range of the individaul model of the LI 20-20 laser gun remains the same whether or not it has a Concept system attached to it. The LTI 20-20 Utralyte 100 has a range between 23 to 610 metres. The LTI 20-20 Utralyte 1000 has a range between 20 to 1000 metres. The Manufacturer's web site explains all.