hysterisis button

Got a cli-mate mini fan controller,all setup and working but not getting what this hysterisis dial is for ,i have a min a max and humidity and temp,then the hysterisis knob.Any help appreciated??

It is used to even out the change in speed in relation to temperature if I am not mistaken

is it better on a high number or a low number,never used one of these before??

Hysterisis is the adjustment of "when" a system should react to change. So, for example, my heater control for my tent is set to keep the room at 15 degrees. The controller could switch the heater on and off all the time, trying to maintain 15 degrees. This would knacker my heater. Instead, I set the hysterisis to 2 degrees. The heater will come on at 13 degrees, and then go off at 17 degrees. Therefore keeping it "around" 15 degrees with much much less switching on and off.

Same works for fans etc

It works like a delay with higher numbers increasing the time for fans to reach max speed.

Here is a video from cli-mate illustrating how it works.

Thanks for replys guys,instructions that came with were crap ,no details about anything even though pretty much easy enough to use just wasnt sure with this button,again thanks.

Basically that setting keeps a device from turning on and off to frequently. You can dial that setting to fit your needs.