Just be aware that the VF is always powered on, even when pump has stopped. Thus, if you need to have the SWCG truly OFF when pump is idle (not same as powered off as it always runs a program, even when not pumping), you need to look for an alternative method. In my case, I monitor the power output from the IntelliFlow VF using a Macromatic DPDT Voltage Control Relay and it shuts down the IntelliChlor transformer when power level drops below circa 145 watts.
This also allows running at superslow speeds with low GPM flow where there is deliberately low volumes through the system just for extra filtering. I run 24 hours @ 3 days a week @ 95 watts and 900 rpm