A: The main difference is that the output electrical level. NPN output is low electrical level, PNP output is high electrical level.
Q: What is the difference between N / O and N / C?
A: N / O means that it is normally disconnected, it is turned on when it is detected, N / C is normally turned on, and it is disconnected when it is detected.
Q: What should I pay attention to when purchasing a sensor?
A: The inductive proximity switch detects metal objects, while the photoelectric switch detects opaque objects. It can be purchased according to requirements. In addition, the sensor supply voltage, output state, output current, output type, and external dimensions must be determined.
Q: What is the difference between several detection methods for photoelectric switches?