$ sudo bluetoothctl scan on
Discovery started
[CHG] Controller 04:7F:0E:61:95:D0 Discovering: yes
[NEW] Device 48:87:2D:B2:F8:00 LPF2 Smart Hub

$ sudo bluetoothctl scan on
Discovery started
[CHG] Controller 04:7F:0E:61:95:D0 Discovering: yes
[CHG] Device 48:87:2D:B2:F8:00 RSSI: -96
[CHG] Device 48:87:2D:B2:F8:00 TxPower: 0



$ gatttool -I 
[                 ][LE]> connect 48:87:2D:B2:F8:00
Attempting to connect to 48:87:2D:B2:F8:00
Connection successful
Notification handle = 0x000e value: 00 
[48:87:2D:B2:F8:00][LE]> 
(gatttool:83213): GLib-WARNING **: 21:41:04.222: Invalid file descriptor.

-- seemed to disconnect --

[48:87:2D:B2:F8:00][LE]> connect
Attempting to connect to 48:87:2D:B2:F8:00
Connection successful
Notification handle = 0x000e value: 00 
[48:87:2D:B2:F8:00][LE]>