Rak Wireless WisNode tracker is the compatible device that can be used with OpenTrak platform. This is manufactured by Rak Wireless and could be purchased using this link [attach link].
The specifications of the device are as follows:
|42 x 42 x 18 mm
|-20° C to +60° C
|Tracker: White / Dark Grey
|5-pin Magnetic Plate
Cable Length: 50 cm
More information about the tracker and it’s function can be found in the documentation for WisNode in Rak Wireless website: