Sure am glad my incubator is being run on a power supply. I got up about 5 minutes ago with no power. It had lost .2°. I plugged the turner into a different power supply and plugged the humidity vent control back up. Humidity is fine now. Covered the whole incubator with 4 thickness of a warm blanket. I'm good for 3-4 hours before I have to take it to the AC power in the van.