Product Specification Brand: Xiaomi Mi MijiaModel: WSDCGQ01LMWireless Connectivity: ZigbeeBattery Type/Size: CR2032Operating Temperature: -20C to 50COperating Humidity: 10-90% RH, non-condensingItem Dimension: 36mm x 36m x 11.5mm Package Include : 1 x Xiaomi Temperature and Humidity Smart Sensor1 x CR2032 Battery Includes1 x User Manual1 x Double-sided Adhesive.