detector

nouns

any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
detector, sensing element, sensor
is derived from
detect
rectifier that extracts modulation from a radio carrier wave
demodulator, detector
electronic equipment that detects the presence of radio signals or radioactivity
detector
is derived from
detect
is a part of
an electronic receiver that detects and demodulates and amplifies transmitted signals
radio, radio receiver, radio set, receiving set, tuner, wireless
is a type of (narrower)
equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)
electronic equipment