Engineering:Zman Switch
From HandWiki
The ZMAN Switch is a patented[1] specialized Shabbos clock marketed to the observant Jewish market. Unlike a traditional timer, it contains a pre-programmed Jewish calendar through the year 2050, so that the consumer does not need to readjust the programming for sunset times or Jewish holidays throughout the year. It is manufactured by ZMAN Technologies located in New Jersey and invented by Yonason Bloch and Herbert Klein.
See also
- Electricity on Shabbat
- 39 categories of activity prohibited on Shabbat
- Shabbat clock
References
- ↑ Bloch, Yonason; Klein, Herbert (Sep 6, 2012), Method and apparatus for a geographically determined jewish religious clock and electrical device combination with holiday and preference modes, http://www.google.com/patents/US20120223661, retrieved 2016-07-18
External links
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