Having some difficulty loading photos so bare with me.Humidifer: search for WH8040 humidifier on amazon. Costs about $30. The thermostat was the STC1000 and cost $20. The latter is used a lot by home brewers. The wiring took a little figuring out but I can clean up my diagram and post it for others to see. The test runs seem to indicate everything is in order; when the RH drops below 70% the device turns on an outlet which in turn powers a humidifier modified to be a fogger. Mist starts, humidity goes up and then machine turns off.