About: http://webisa.webdatacommons.org/120539614

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	In one embodiment, detection target 28 is a magnet, and each contact-less sensor is either a Hall Effect sensor, a reed switch, or other magnetic sensor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com