Digital Wireless 3-in-1 Thermometer & Hygrometer with Large Display and Temperature AlarmKeep track of both indoor and outdoor climate with this versatile 3-in-1 digital thermometer and hygrometer. Perfect for home, office, greenhouse, or as a weather station.Features:Measures temperature and humidity both indoors and outdoorsEasily switch between °C and °FShows temperature trend, and saves max/min values for temperature and humidityEquipped with white backlight for clear readingTemperature alarm for customized thresholdsProduct Specifications:1. Measurement Range:Indoor temperature: -9.9°C to +50°C / 14°F to 122°FIndoor humidity: 20%RH to 95%RHOutdoor temperature: -40°C to +60°C / -40°F to 140°FOutdoor humidity: 20%RH to 95%RH2. Resolution:Temperature: 0.1°C / 0.1°FHumidity: 1%RH3. Accuracy:Temperature (0°C to 40°C): ±1°C / 1.8°FOther temperature ranges: ±2°C / 3.6°FHumidity (40%RH–80%RH): ±5%RHOther humidity ranges: ±8%RH4. Dimensions:Main unit: 87 x 105 x 24.5 mmTransmitter: 50 x 105 x 26 mmPackaging: 145 x 62 x 115 mm