Tagged off using this device (6)
I believe the answer is:
gadget
'this device' is the definition.
(gadget is a kind of device)
'tagged off' is the wordplay.
'off' indicates anagramming the letters.
'tagged' is an anagram of 'GADGET'.
'using' is the link.
(Other definitions for gadget that I've seen before include "Thing made or used for particular purpose" , "Gizmo, contraption" , "Ingenious little device" , "Handy device" , "Useful small device" .)