The most common and most likely answer to this crossword clue is the 7 letter word HANDSET
I've seen this crossword clue in The Guardian
H
A
N
D
S
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T
More clues leading to the result HANDSET
- Husband with prescribed part of phone
- Homer Simpson’s endorsing characters? He wanted to phone home with this?
- Remote crewmen on Egypt’s borders
- Workers out of this world making telephone item
- Telephone component document’s first presented in German, perhaps, and French
- It’s hard with company to be remote
- Prepared after husband lost cable, perhaps for phone
- Hot and determined controller
- Give team a telephone
- Send that mobile, shun the model, and get another perhaps
Buddy explains!

The straight part
We know that "remote control device" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case remote control device = handset.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HANDSET mean?
HANDSET noun- The part of a landline telephone containing both receiver and transmitter (and sometimes dial), held in the hand.
- A mobile phone.