A light curtain typically contains three parts: housing, the transmitter (emitter), and the receiver, and applies a self-check circuitry that requires fault revisions after entering the stopping condition.
The enclosure of a full set of light curtains is characterized to have aluminum framing, a recessed window, metal end-caps, steel brackets to the main sensor body, and pigtail cord sets with flying leads. Some design includes NBR rubber to provide IP6x water-proof sealing capability.
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