Do not place the laser product at a place where its laser beam may hit a reflecting object such as a mirror or a glass window. The reflection beam of the laser is also harmful to the human body.
When not performing measurement, cut off the power supply or shade the objective lens with objective cap to prevent the instrument emitting the laser beam.
Keep the laser product in a place where persons, who do not have the product knowledge, such as children, can not touch it by mistake.