About: http://webisa.webdatacommons.org/400339576

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	You can daisy-chain these modules to increase the number of digital outputs in multiples of eight, all while only using the three digital output pins on your Arduino or other microcontroller.
http://www.w3.org/ns/prov#wasQuotedFrom	tronixstuff.com