Ⅰ. XIAOMI Mijia LYWSD03MMC Bluetooth 4.2 Thermometer Hygrometer Second Generation Ⅱ. 1.5 inch LCD display, the monitor data can be clearly read Ⅲ. Built-in advanced Sensirion temperature and humidity sensor from Switzerland, sense subtle change of temperature and humidity Ⅳ. Built-in CR2032 button battery for one-year standby Ⅴ. Works with Mijia APP: via Mijia app to switch on humidifier when indoor humidity is too low and air-conditioner when indoor temperature is too high Ⅵ. Intimately designed baby mode to give you and your family a smarter guardian Ⅶ. Cute cartoon expression to spell over comfort level, very cute and simple Ⅷ. Adopts ABS environmental material, durable and long lasting use Ⅸ. Comes with a wall sticker to makes it can be placed wherever you want Ⅹ. Specification: Ⅺ. Model: LYWSD03MMC Ⅻ. CMIIT ID: 2019DP8115 ⅩⅢ. Material: ABS, PMMA ⅩⅣ. Size: 43x43x12.5mm ⅩⅤ. Battery: CR2032 (installed) ⅩⅥ. Operating voltage: DC2.5V - 3V ⅩⅦ. Wireless connection: Bluetooth 4.2 BLE ⅩⅧ. Temperature monitor range: 0℃ - 60℃ ⅩⅨ. Humidity monitor range: 0% - 99% RH ⅩⅩ. Temperature display resolution: 0.1℃ ⅩⅪ. Humidity display resolution: 1% RH ⅩⅫ. Executive standard: QB/WSDJ 2401-2019 ⅩⅩⅢ. Package included: ⅩⅩⅣ. 1 x XIAOMI Mijia LYWSD03MMC Bluetooth 4.2 Thermometer Hygrometer Second Generation ⅩⅩⅤ. 1 x Chinese User Manual ⅩⅩⅥ. 1 x Wall Sticker