SG2 BASE Instruction Manual182.2.5. Use of deviating mirrorsThe control of any dangerous area, with several but adjacent access sides, is possible using only onesafety device and well-positioned deviating mirrors.Fig.11 shows a possible solution to control three different access sides, using two mirrors placed at45° with respect to the beams.Fig. 11The operator must respect the following precautions when using the deviating mirrors: The alignment of the emitter and the receiver can be a very critical operation when deviating mirrorsare used. Even a very small mirror displacement is enough to lose alignment. The use of theDATALOGIC AUTOMATION laser pointer accessory is recommended under these conditions. The minimum safety distance (S) must be respected for each single section of the beams. The effective operating range decreases by about 15% by using only one deviating mirror, thepercentage further decreases by using 2 or more mirrors (for more details refer to the technicalspecifications of the mirrors used).The following table shows the operating distances relating to the number of mirrors used.number of mirrors operating distance1 16.5 m2 13.7 m3 11.6 m Do not use more than three mirrors for each device. The presence of dust or dirt on the reflecting surface of the mirror causes a drastic reduction in therange.