3-Pack Mini Hygrometer & Thermometer, Indoor Outdoor Digital Humidity Meter Gauge Temperature, ℉/℃, for Home, Office, Reptile, Car, Greenhouse, Lab, Terrarium, Cellar.. A01 White

[ Upgraded Design of Vents and Power Switch] Better air flow for better measurement. Updated switch is more convenient and durable.
[ Stable and Accurate ] Humidity range: 20%RH ~ 99%RH, Accuracy: ±5%RH. Temperature range: 14℉ ~ 140℉ (-10℃ ~ 60℃), Accuracy: ±1.8℉(±1℃). New sensors provide stable and accurate performance.
[ Fast Response , ℉/℃ Conversion ] The measurement results are updated every ten seconds. Can convert between Fahrenheit (℉) and Celsius (℃) .
[ Power Supply, Package Contents ] Powered by one LR44 battery. Package Contents: Hygrometer x3 ( batteries installed ), Double-sided tape x6.
NOTE: ℃/℉ conversation: Double-click button. Turn off/on power: Press and hold button. The size and position of the temperature and humidity numbers cannot be swapped