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Micro controller based design.
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90-290 VAC input.
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Five steps control with 4 on board (PCB) sugar cube relays.
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Supports lowcut enable / disable through a jumper.
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All steps can be aligned by just a single trimpot. Most easy to align.
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AC highcut with fast LED blinks + .5 seconds buzzer beeps per 10 seconds.
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Works on single low tention (L.T.) (22 Volts) Winding from main transformer.
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Fully isolated from mains, no hazard of electric short.
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No extra small (9-0-9 or 12-0-12) transformer required.
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In built time delay relay (TDR) for compressor based equipment control.
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2 LEDs to show various states e.g. a low cut, TDR, high cut.
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Lowest components count with very small single side PCB resulting in ultra reliable operation.
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You just need this card + power transformer and a cabinet to built a complete unit, its very easy to wire.
