Hi Fishon,
I’ve used a couple of different ones . . . An NTE RS3-1D40-21 SSR 50A or this one from Amazon https://www.amazon.ca/gp/product/B079BGBCF4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1.
Both have worked fine for me.
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Ordered the Amazon relay above.
Works perfectly.
12v into signal side of relay
5v IOT relay wired per article instructions
Broke the positive 5V coolant across the output side of the relay.
Now a coolant command/M8 turns it on, and everything on the relay shuts off at the end of a program.
Estop shuts everything off.
Many thanks all for help!
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