How do I disable the automatic summer/winter time switching?
Press buttons ② and ③ simultaneously until the display shows 'oN:Su', then slowly release button ②. Hold down button ③ until the display shows 'oF:Su', after which the display automatically returns to function mode. The automatic daylight-saving time switching is then deactivated.
From the official Park Lite 1411 Electronic Parking Disc manual, page 69
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