Home Forums Job & Work Life 전자부품에 대한 질문- 옵토 커플러와 릴레이 전자부품에 대한 질문- 옵토 커플러와 릴레이 Name * Password * Email It just came to me. It might not be huge an advantage, but it is easy to produce a latching mechanical relay. Hard to maintain the switching state for SSRs when the power is cut. I agree to the terms of service Comment