Activated with second reset (8,2)
I believe the answer is:
switched on
'activated' is the definition.
(to switch something on is to activate it)
'with second reset' is the wordplay.
'reset' is an anagram indicator.
'with'+'second'='withsecond'
'withsecond' with letters rearranged gives 'SWITCHED-ON'.
(Other definitions for switched on that I've seen before include "Up to date" , "Illuminated" , "with electricity supply?" , "Emotionally aroused" , "Aware" .)