Chipfox GPS Tracker on Twitter: "Our HD-Industrial version: no SIM Card #0G, IP67, long battery life ! Location history, Geofencing, Position Lock, Motion Detection, Custom Alerts, Geo-fences, Notifications, Resistant to interference and
Sigfox GPS Tracker : 11 Steps - Instructables
Sig-Tracker | Sigfox Partner Network | The IoT solution book