About: http://webisa.webdatacommons.org/177239808

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	Since cost is an issue, the SM200 may be the best bet.Yes, Portal can be used freely as a datalogger for an unlimited number of nodes.
http://www.w3.org/ns/prov#wasQuotedFrom	eetimes.com