The Zman Tevchnologies Shabbos Keeper is not set up to allow for cooking on Friday afternoon before Shabbos.

Question: When Shabbos directly follows Yom tov, how do you set it up to accept Shabbos early?

Answer:  it is not possible to set up the system to accept Shabbos early before Yom Tov. The system does not accommodate this adjustment at this time.

Question: How can you modify the default Yom Tov schedule to cook in the afternoon. This is halachiclally acceptable to:

• cook for children who will eat before the end of the day
• cook for an ill person
• cook for the next day which is Shabbos

Answer: Regarding modifying the default Yom Tov schedule to include cooking in the afternoon, currently, the Shabbos Keeper does not offer customization options for this. The preset schedule is fixed, with cooking available from 8:00 AM to 12:00 PM, and a 4-hour window for candle lighting. For the remainder of the time, the system maintains a warm setting. On Shabbos ending a three-day Yom Tov, the appliance will also stay warm throughout.

Question: Are there models where people  can bypass the ZMan gadget and cook during the upcoming chagim?

Answer: There are some models that have an approved OU/CRC built in shabbos mode.

 

Free-Standing Range

GGF400

GGF500

GGF600

GGS500

GGS600

GGS60L

GRF400

GRF500

GRF600

GRS500

GRS600

GRS60L

XGF500

XRF500

For other models and they want to cook different hours they can always choose to play around with the clock. The built in schedule in cook window from 8-12 so if they want to cook from 10-2, they can change the time on the shabbos keeper before the Chag so the keeper will think its 8-12 while really its 10-2.

Question: Can the consumer disable the Zman appliance and use the Sabbath Mode that comes with the stove?

Answer: From a technical aspect that's simple.  Unplug the Shabbos keeper from the cable.

Editors note: Consider other halachically acceptable options for heating food.