Professional WiFi Weather Center Wireless Colored LED Display Temperature Humidity Rainfall Pressure Monitor Item Type: Professional WiFi Weather Center Model: WH2900C Material: ABS Weather Station Power Supply: 2PCS AA Battery ( Without Battery ) Display Power Supply: DC 5V or 3 AAA Batteries ( Without Batteries ) Outdoor Data: Transmission Distance in Open Field: 100m (300 Feet) Frequency: 433MHz Temperature Range: -40°C--60°C (-40°F-+140°F) Accuracy: ±1°C Resolution: 0.1℃ Measuring Range Relative Humidity: 10%-99% Accuracy: ±5% Rainfall Display: 0-6000mm (Out of Range Display ---) Accuracy: ± 10% Resolution: 0.1mm ( Rainfall <1000mm) , 1mm ( Rainfall >1000mm) Wind Speed: 0-50m/s (0-100mph) (If out of range display ---) Accuracy: ±1m/s ( Wind Speed <5m/s ) , ±10% ( Wind Speed >5m/s ) Light: 0-200k Lx Accuracy: ±15% Temperature and Humidity Sensor Measurement Time: 16s Indoor Data: Indoor Temperature Range: 0°C-50°C (32°F-+ 122°F) (If out of range display ---) Resolution: 0.1℃ Measuring Range Relative Value Humidity: 10%-99% Resolution: 1% Barometric Pressure Measuring Range: 700-1100hPa (20.67-32 5inHg) Accuracy: ±3hpa Resolution: 0.1hPa (0.01inHg) Alarm Duration: 120s Indoor Data Measurement Interval: 60s