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The manufacturer of the controller often has updates of circuit boards, firmware, and so forth. Modification of timing, cycle lengths, and so forth is often done via your office computer (with the appropriate program). Some controllers these days can be controlled via Blutooth and an on-site laptop computer.
The older, mechanical clock-type controllers, of course can be reprogrammed by pulling the timing tabs and re-inserting them elsewhere to alter signal cycle lengths, and so on.
I would pretty much advise you to acquire the controller manufacturer's instructions/manual.
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∙ 13y ago
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