About: http://webisa.webdatacommons.org/171765722

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 circuit includes a switch, a power supply and an audio indicator means, such as a buzzer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com