V_access and V_sprinkler
I am glad to see there is now V_sprinkler. what would be useful is if one can extend the definition to include sending a time in seconds for the sprinkler to stay on. This way, the node can take care of switching it off again in case the controller stops working for some reason.
I also implemented/tested a V_Access/V_toggle type which is used to trigger a relay for 1-3 sec to open a door or gate. It also requires the time for toggle to be sent as with Sprinkler.