Charge your Tundra Tracker until its LED color gets green.
A Tundra Tracker can be paired with one dongle connected to your PC.
Press the power button on top of the tracker until its LED turns blue.
On your PC, start SteamVR and select “Devices" -> “Pair Controller" -> “HTC VIVE Tracker” on its menu.
LED starts blinking in blue when it enters pairing mode. It turns green when it’s paired with a dongle and Tundra Tracker’s icon appears on SteamVR window.