About: http://webisa.webdatacommons.org/299923290

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	A light to frequency converter, without being bound by theory or the like, is an optical sensor that produces a TTL output PWM signal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr