I found a solution to make the EATON RF9640 Switch work properly (Turning the lights off completely...) by making a very small modification of a custom device driver...
I am using a modified version of the "Any Z-Wave Dimmer Driver v1.1.8" written by @jvm33 found here : Link to Driver
The modification I made to the code is just on one line... I replaced line 1102 from the code :
else sendSupervised(zwave.switchMultilevelV1.switchMultilevelSet(value: newValue), params.ep)
with the following :
else sendSupervised(zwave.switchMultilevelV4.switchMultilevelSet(value: newValue, dimmingDuration:1), params.ep)
Forcing the "dimmingDuration" to 1sec in that command is making this driver works properly for the EATON RF9640 on my C-7 hub (correctly removing the residual current and fully / properly turning OFF the switch).
Check-out this driver... Pretty complete... Impressive work by @jvm33 (Thanks!) !!!
