In my tank-cabinet I have a 40gallon ATO reservoir which I (obviously) have to refill occasionally . After forgetting I had the refill on and going out to dinner once, and creating a small puddle.....

I have an ATO overflow switch in the reservoir, set up to alarm, email, text before the puddle-situation repeats. However, when I fill the reservoir, and the alarm triggers, the water level will remain high (switch on) until enough evaporation takes place to allow it to close.

There are other alarms in the EmailAlm_I5, SndWrn_I7 and SndAlm_I6 that i'd still like to get alarms on.

I know I need to create a virtual something on that switch, but haven't a clue.

Help please?