AnonymousOpencircuit 5V Relay module 2 channelsProduct is exactly as described and works well. Perhaps a small manual could have been included about the inputs (low active) and the jumper for separate power supply.
FloOpencircuit Relay module 5VWorks perfectly. I use it to trigger a plasma cutter from a Creality Falcon 10w engraver. Requires adding a 5V power supply ( USB in my case) to avoid IO collapse