What is a feedback loop receptor?

Answer 1

In a feedback loop, there are four items, a detector, some time delay, an actuator, and a source of energy.

Taking the familiar room thermostat, the detectoris the temperature sensor; the time delay is the time taken for the room to warm or cool; the actuator is the contacts (switch) used to control the energy source; and the energy source is the heater or cooling machinery.

Collectively, they are the feedback loop. In the above example the receptor is the temperature detector.