liu-xiao-guo@localhost:~$ sudo /snap/bin/bluez.bluetoothctl
[NEW] Controller 00:00:00:00:5A:AD localhost.localdomain [default]
[NEW] Device F8:16:54:D0:35:8F ubuntu-0
[NEW] Device 24:71:89:06:97:86 CC2650 SensorTag
[bluetooth]# pair 24:71:89:06:97:86
Attempting to pair with 24:71:89:06:97:86