Tim GOpencircuit Timer relay module - 12VI had a little trouble setting the correct mode, but once you get the hang of how the buttons work, it's pretty easy to operate.
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
W. GrachtOpencircuit 5V Relay module 8 channelsWorks well, with 8 channels there are quite a few options to control devices. The optocouplers keep the signal safely isolated.