OP here, thanks for the idea! I didn't realize there were multiple types of replays since these seemed to be so popular. This one is definitely the "clicky" electro-mechanical relay, so I'll have to look into replacing with a solid-state relay type if I notice any inconsistencies.
https://www.youtube.com/watch?v=BFoeq16ojU4 https://github.com/openshift-evangelists/Wild-West-Spawner