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WHAT: Photo eyes send a beam across the driveway that are picked up by a sensor on the opposite side. The sensor detects interruptions in the beam.
WHY: Photo beams are generally used in two places on swing gates: right past where the gate(s) are closed and right past the end of the swing of the gate(s). On slide gates: right next to the gate. The beams are designed to be used much like on your garage door opener – if something breaks the beam while the gate opener is moving it will stop it from moving any further and causing damage.
QB ID: R4222
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