2020 Newest Version Powered By: CR2032 button battery (included) Xiaomi Mijia Smart Bluetooth Thermometer 2 Wireless Electric Digital Hygrometer Thermograph With Mijia APP for Mi Smart Home Brand XIAOMI Mijia Model LYWSD03MMC CMIT ID 2019DP8115 Material ABS+PMMA Size 43x43x 12.5mm Voltage DC2.5V- -3V Battery CR2032 Wireless Connection Bluetooth 4.2 BLE Measure range 0C-60C Temperature display resolution 0.1C Humidity range 0%99%RH Humidity display resolution 1 %RH Executive standard QB/WSDJ 2401-2019 Quantity 1Pcs This is a household temperature and humidity sensor, not industrial grade, so the temperature will have an error of 0.5 ; There will be an error of 2% in humidity, which is normal. Features: 1. Home hygrometer, data can be clearly read in various brightness and angle. 2. High sensitivity and accurate sensirion from Switzerland, sense subtle change of temperature and humidity a breath away. 3. An expression to spell over comfort level, cute and simple. 4. Low consumption screen, a CR2032 button battery for one-year. 5. Built-in advanced Sensirion temperature and humidity sensor, temperature accuracy: 0.1 degrees, humidity accuracy: 0.1 percent RH 6. Via Mi app to switch on humidifier when indoor humidity is too low and air-conditioner when indoors temperature is too high LED digital display, you can get temperature, humidity easily Package included: 1 x Xiaomi Mijia Thermometer Hygrometer 1 x Wall Sticker 1 x Use Manual(chinese)