Upgrading a 90-egg foam incubator, installing a computer fan and an XH-W3001 thermostat.
I recommend setting the hysteresis on this thermostat to at least 0.3 degrees Celsius. Frequent relay operation (clicking) leads to rapid thermostat failure, which can have disastrous consequences. I recommend installing overheat protection and a solid-state relay or intermediate relay like the RP-21 after the thermostat.
Link to the thermostat - http://ali.pub/543pe6