PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Any cheap and basic multimeter will measure AC & DC across the sort of voltage ranges you need - this kind of thing:Jeremy
http://www.w3.org/ns/prov#wasQuotedFrom
  • busconversions.com