Features: WiFi & Zigbee Intelligent Hygrometer delivers precise real time temperature/humidity monitoring with ±0.5°C and ±5% accuracy for great environment control. Features a backlight LCDs screen for clear visibility in lower light and double wireless connect (WiFi/Zigbee) for seamlessly intelligent homes integration via app. Ideal for households with infants, elderly members, or indoor plant requiring stable climate conditions and air quality awareness. Perfectly monitors bedrooms, greenhouses, offices, or wine cellars to prevent molds risks and maintain comfort through customizable app alerts. Small 4.1x7.3x2.5cm design with PC+ABS housing ensures durable placement on walls/desktop for environment tracking across 10°C-65°C range. Specifications: Component: ABS Size:Approx. 4.1x7.3x2.5cm/1.61x2.87x0.98in Optional Color: Black, White Input: 5V1A Measurement temperature ranges: -10℃-65 ℃ Temperature accuracy: ±0.5℃ Measurement humidity ranges: 0%-99% Humidity accuracy: ±5% Package Includes: 1pc Temperature and humidity meter note: Please allow 1-3cm error due to manual measurement. please make sure you not mind before you bid. Due to the differences between different monitors, the picture may not reflect item's actual color. Precautions: 1. bluetooth-compatible is only used for networking signal connection and cannot be used alone. WIFI+bluetooth-compatible is more stable. 2. For indoor use only. 3. When the sensor is powered on for first time or the environmental conditions change, it needs to left alone for half a hour to adapt to the temperature and humidity of the surrounding environment. Only after the sensor is stable can it provide accurate temperature and humidity measurements.