To dismantle the Digital black proceed as follows:
Switch off the mains.
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If used, untighten the safety screw at the bottom of the display. Use an Allen (hex) key of metric 2 mm.
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Pull gently at the bottom of the display to remove it from its base.
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Unscrew the claws or top/bottom wall-mounting screws and pull the base gently out of the wall.
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Unscrew the wire terminals and pull the wires out of the terminals.