Device responsive to signal processing snores (6)
I believe the answer is:
sensor
'device' is the definition.
(sensor is a kind of device)
'processing snores' is the wordplay.
'processing' indicates anagramming the letters.
'snores' is an anagram of 'SENSOR'.
'responsive to signal' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for sensor that I've seen before include "Detection device" , "One detects" , "that could provide a smokescreen" , "Device that reacts to stimulus from snores" , "device to detect change?" .)