How should I choose between a 4-channel and an 8-channel relay module?
June 16, 2026
For small spaces or distributed control, we recommend the 4-channel module (CW.RY040416 / CW.RY040420); for centralized control or projects with numerous lighting circuits, we recommend the 8-channel module (CW.RY080816 / CW.RY080820).All models support manual operation and current detection (optional).