I have a four things plugged into the power switch and turning those off with maintenance was easy. I have ATO set with 2 level sensor in min/max setting and want to turn of the sensors during maintenance (water change out) then have a delay on the ATO sensor and switch after maintenance mode is done. How can I do this?

Also during the water change the probes will be out of the water is that ok?
Is there away to turn the probes off and back on within the maintenance mode?