2 Pack Room Indoor Hygrometer Digital Humidity Meter

Digital Temperature Humidity Meter 2 pack with AAA Batteries Compact Indoor Hygro-– Must-Have for Home Indoor Temperature and Humidity Monitor 2 Pack- with AAA Battery When it turn on, the temp and humidity readings will flash for 3 minutes for auto-calibrate.When two units are in the same place conditions, their readings will not be exactly identical. A tolerance of ±1.8℉ for temperature and ±5% RH for humidity is normal and does not indicate a device defect.NOTE: The power and ℉/℃ switch are controlled by one single button located on the back of the unit. Short press to turn on the device, and press again to switch between ℉ and ℃.