Wireless Weather Forecast Station with LCD Backlight Wind Speed Rainfall Gauge Instrument Item Type: Weather Instrument Material: ABS Weight: Approx. 1745g / 61.6oz Display Screen Size: Approx. 19x12.8cm / 7.5x5.0in Model: WS3030 Scope of Application: 50-120m / 164.0-393.7ft Display Battery: 3x AA Batteries (Battery Not Included) Receiver: Temperature Range: 0℃-60℃ (32℉-140℉), Resolution: 0.1℃, Accuracy: +1℃. Humidity Range: 20%-99%, Resolution: 1%, Accuracy: ±5% Pressure Range: 300-1 100hpa, Resolution: 0.1hpa, Accuracy: +3hpa (700-1100hpa Interval) Alarm: 2 Minutes Duration Battery Life: About 12 months (the quality and capacity of the battery determine the use time of the product) External DC power supply, DC block products can also provide DC power supply: DC 5V/500MA Low Voltage Detection: The battery icon flashes (the battery voltage is lower than 3.2V) Transmitter: Water Resistant Grade: Water Resistant Grade 3 Temperature Range: -40℃-60℃ (-40℉-140℉), Resolution: 0.1℃, Accuracy: ±1℃ Humidity Range: 20%-99%, Resolution: 1%, Accuracy: ±5% Wind Speed Range: 0-50m/s, Resolution: 0.1m/s, Accuracy: 1m/s (Wind Speed <10m/s) Rainfall Range: 0-9999mm, Rainfall Resolution: 0.4mm (Rainfall<1000mm), 1mm (Rainfall>1000mm) Data Update: 40 Seconds/Time