Marvelmind Beacon HW v4.9 (868mHz / 915mHz)The indoor positioning beacon is what you can use to track the position of the beacon, or any object the beacon is mounted on with an accuracy of up to 2cm. The beacons use ultrasonic pings, connected via an ISM band telemetry connection to accurately and affordably tracking objects indoors. To extend the range of the indoor positioning starter kit , you can add more beacons to increase the coverage area. This beacon is designed to be a mobile beacon