To turn on the XR, slide the Sensor forward towards your fingertips. Slide the Sensor back into its cradle to turn it off.
You can also turn the TapXR on and off by pressing the button on the back of the Sensor.
When the TapXR is first turned on, the LED will blink quickly, (twice per second), to indicate that it is ready for pairing. When it has been paired to a device, it will blink slowly (once per two seconds), indicating that it is paired to a device.