A Light Curtain that can be a Transmitter or Receiver - Video
Allen-Bradley GuardShield 450L-B Safety Light Curtain are unlike traditional safety light curtains, which are based on separate transmitter and receiver units. This next generation light curtain system features patented technology, which allows each transceiver to be used as a transmitter or receiver via an innovative plug-in module. This advanced technology greatly reduces stock and provides a flexible, cost-effective safety solution.
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Allen Bradley,Rockwell Automation