<http://schema.org/sku>
"QT7116-8DH-3R"^^<http://www.w3.org/2001/XMLSchema#string>
<https://q-see.com/products/reconditioned-8-channel-1080p-hd-sdi-system-with-8-refurbished-sdi-cameras-qt7116-8dh-3r-1>