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Opto-electronic safety sensors mostly work with infrared, therefore invisible light. The alignment of these sensors and the Deflecting Mirrors is generally relatively time-consuming, especially with multiple side guarding with Deflecting Mirrors.
By contrast, the LA 78 series laser alignment aids make alignment easy and convenient. They are mounted directly on the sensor housing and visibly mark the target point of the sensor beams with a red light laser. Complex arrangements can consequently be set up by just one person, while also saving time in the process.
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