based on info from https://aliexpress.ru/item/1005004617618178.html?sku_id=12000029849830576 and https://satelit-info.com/phpBB3/viewtopic.php?f=172&t=3338
actual articles:
https://nicuflorica.blogspot.com/2023/08/ceas-ntp-pe-afisaj-monocrom-de-22-cu_16.html
https://nicuflorica.blogspot.com/2023/08/ceas-ntp-pe-afisaj-monocrom-de-22-cu.html
https://nicuflorica.blogspot.com/2023/07/afisaj-monocrom-de-22-cu-rezolutie-de.html
