About: http://webisa.webdatacommons.org/452810825

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The device will become inoperative if there is a failure of the main supply, but provision could be made to keep the unit operating for a few hours from a 12 volt battery.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com