_____________ photoelectric sensors place the transmitter and receiver in one assembly and often use something like a bicycle reflector to return the light.
A) Through-beam
B) Retroreflective
C) Diffuse
D) Light-level detection

Question

Quizplus · Accepted Answer

Retroreflective photoelectric sensors have both the transmitter and receiver in one housing and use a reflector to bounce the light beam back to the receiver.

_____________ Photoelectric Sensors Place the Transmitter and Receiver in One