Which is better?
Holmes Humidity Monitor/Hygrometer. Does not need batteries. Sits in incubator
Digital Thermometer/Hygrometer for Incubator. Needs batteries. Sits in incubator
Holmes Humidity Monitor/Hygrometer. Does not need batteries. Sits in incubator
Digital Thermometer/Hygrometer for Incubator. Needs batteries. Sits in incubator