The SlimLine-system operates with only one transmitter SLT... and one receiver
SLR... in separate housings. No external amplifier is required. This is an open-loop
system that may be used in applications where the photoeyes must be wired opposing each other
but there can be no wires shared between the two.
The system works
with modulated infrared light which provides high immunity to ambient light. The
electronic circuits are designed to detect only those signals with the correct frequency
and phase relation. This almost completely excludes interference from other light
barriers. Thanks to their large aperture angle, they can be easily aligned even at
distances of 15 meters (49 ft). They are insensitive to vibrations, shock and the
resulting readjustment.
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