Hi Danny. Thanks for the question. Unfortunately, I'm not sure which Hobart dishwasher you're referring to. In speaking with one of our technicians we think your question refers to a thermometer that registers a temperature and then stays there. Is this what you're looking for?
The Hobart 276923 Dishwasher Thermometer will not hold a temperature, it is only used to raise the temperature.
If you could provide more information regarding the dishwasher in question, or a clarification of what you're needing, we can try to further assist you. Feel free to give us a call at 1-888-388-6372 and a member of our team would be more than happy to speak with you about your needs.