Divided into 6 pages, each page describes the measures to be taken to ensure your laser sensor work properly. For examples the prevention of ambient light, dust or dirt that will infleunce the effectiveness severely.
Have you watched the "The Survival" before? I think our GP-M is one of the winners. Able to withstand harsh conditions in water, oil and misty environment. It's a must use for durability and no maintenance is needed!