Weather Monitor with Outdoor Sensor Wireless Weather Meter Temperature Humidity Wind Speed Display Item Type: Weather Monitor Material: ABS Outdoor Sensor Power Supply: 2 x AA Dry Battery (not included) Indoor Display Screen Power Supply: 3 x AA Dry Battery (not included) or DC 5V power cable Outdoor Data: Open Ground Transmission Distance: 100 meter / 328ft Frequency: 433MHz Temperature Range: -40-60℃ (-40-140℉) Accuracy: ±1℃ Resolution: 0.1℃ Humidity Range: 10%-99% Accuracy: ±4% in range 20-80%RH, ±6% in other ranges Rainfall Display: 0-9999mm (out of range display---) Accuracy: ±6% Resolution: 0.3mm (if rainfall <1000mm), 1mm (if rainfall >1000mm) Wind Speed: 0-50m/s (0-100mph) (out of range display---) Accuracy: ±1m/s (wind speed <5m/s), ±10% (wind speed >5m/s) Temperature Humidity Sensor Measurement Interval: 48 seconds Waterproof Grade: IPX3 Indoor Data: Pressure Temperature Measurement Interval: 48 seconds Indoor Temperature Range: 0-50℃ (32-122℉) (out of range display---) Resolution: 0.1℃ Humidity Range: 10%-99% Resolution: 1% Pressure Measurement Range: 300-1100hpa (8.85inHg-32.5inHg) Accuracy: ±3hpa (absolute pressure), ±3hpa at 700-1100hPa Resolution: 0.1hpa (0.01inHg) Alarm Duration: 120 seconds