Zman Technologies Shabbos Keeper

[shapsam]

This may make sense in the case of a warmer in which its unusual to cook in. An oven cannot become a warmer merely by being on a certain temperature, as it would still be מחזי כמבשל.

Can that be the reason why they only let it go to 200 so they don't considered it an oven?

[imayid2]

Can that be the reason why they won't let it go higher than 200 so it's not considered an oven?

Nope. If it sounds like an oven, looks like an oven, and cooks like an oven the whole week, then there is no pretending that it isn’t.

[skyguy918]

I’m assuming they don’t allow putting in food on Shabbos and its only for food put in before shabbos. So there should be no halachik implications on raising the temperature.

Says right on the product page:


Shabbos Keeper is designed to enable food being left in oven before Shabbos.

It is not intended for the placement of food on Shabbos

[ushdadude]

Says right on the product page:


Shabbos Keeper is designed to enable food being left in oven before Shabbos.

It is not intended for the placement of food on Shabbos

That assumes people read the packaging. When a hot water urn has a glass tube you're supposed to express some water before shabbos. Most people I asked don't, even though it says it on the package