PYRA® LED series . Equipped with modern LED technology, the signaling devices, available as RGB, single and traffic lights, offer flexible and versatile signal options and operating modes for industrial [...] access control. With the single light PY L-S , the RGB light PY L-S RGB , the traffic light PY L-S-TL/TLA with or without sounder as well as the audibe-visual combination PA L1 , Pfannenberg [...] characterized above all by its flexibility and durability. In signal technology, however, LED lights offer many other advantages: brightness, light colours and time sequences allow various combinations cor