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Do I have to install both photoelectric cells and reversing edges as secondary devices to be in compliance with the standard?

April 26, 2017cells compliance Devices edges install photoelectric reversing Secondary standard

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Do I have to install both photoelectric cells and reversing edges as secondary devices to be in compliance with the standard?

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No, you do not have to put both on the gate. Either a non-contact sensor, a contact sensor or a combination thereof can be used as secondary devices.