Remote alien passes, initially (7)
I believe the answer is:
handset
'remote alien passes initially' is the definition.
I can't tell whether this defines the answer.
'alien passes initially' is the wordplay.
'alien' becomes 'et' (extra terrestrial).
'passes' becomes 'hands' ('hand' can be a synonym of 'pass').
'initially' is a charade indicator (letters next to each other).
'et' put after 'hands' is 'HANDSET'.
Can you help me to learn more?
(Other definitions for handset that I've seen before include "controller" , "Phone receiver" , "Part of a telephone" , "Shed tan (anag.)" , "part of phone" .)