Installation instructions and basic wiring diagram for Sunvic valves of the type covered in the SeeRed webpages.
It is claimed "These valves .... brings (sic) new levels of reliability and durability to motorised valves". This could well be true - the new level of reliability is arguably much worse than it used to be with Satchwell Sunvic Minivals!
An explanation of the internal wiring of these valves is here. See also the internal wiring diagram taken from the patent website.
home page for Sunvic valves
home page of SeeRed