Brand: Xiaomi Mi Model: LYWSD02MMC Temperature measurement: °C–60°C Materials: ABS, PC Wireless connection: Bluetooth Low Energy 5.0 Product dimensions: 110mm x 55mm x 10.1mm Battery model: CR2032 (x2, must be purchased separately) Model L: YWSD02MMC Humidity measurement: %–99% RH Product net weight: 57g Time display mode: 12-hour / 24-hour Operating voltage: DC2.5V–3V