1. The response speed is fast, and the time constant is usually measured in milliseconds or microseconds.
2. The input and output terminals are insulated, so the withstand voltage is very high, generally it can exceed 1KV.
3. No contact, long service life, small size, impact resistance.
4. For one-way transmission, the input can only affect the output, and the output cannot affect the input.
5. The common-mode rejection ratio of the optocoupler is very large, so it can suppress interference and eliminate noise well.
