QT-WM Series handheld weather station is a mini instrument with multiple functions. It is used to measure wind speed, air temperature, humidity, altitude, dew point, barometric pressure, etc. With LCD displays, they are foldable, portable and easy to use. Technical parameters Parameters QT-WM1000 QT-WM2000 QT-WM3000 QT-WM4000 Measurement Range WS 1.1-20m/s Temp -1℃~+50℃ WS 1.1-20m/s Temp -1℃~+50℃ H 0~100% WS 1.1-20m/s Temp -10℃~+50℃ H 0~100% P 400~1000mbar WS 1.1-20m/s Temp -10℃~+50℃ H 0~100% P 400~1000mbar ASL -600~7000m Resolution WS 0.1m/s Temp 0.1℃ WS 0.1m/s Temp 0.1℃ H 0.1% WS 0.1m/s Temp 0.1℃ H 0.1% P 1mbar WS 0.1m/s Temp 0.1℃ H 0.1% P 1mbar ASL 1m Accuracy WS ±5％ Temp ±1℃ WS ±5％ Temp ±1℃ H ±3％ WS ±4％ Temp ±1℃ H ±3％ P ±3mbar WS ±4％ Temp ±1℃ H ±3％ P ±3mbar Dew Point × √ √ √ Cool breeze √ √ √ √ Heat Index × × √ √ ASL × × × √ Display 4-digit display LCD Measurement unit WS: m/s, ft/min, knots, Km/hr, mph Temp: ℃/℉ WS: m/s, ft/min, knots, Km/hr, mph Temp: ℃/℉, barometric pressure: mbar/inHg Dimensions 235×45×25mm (open) 140×45×25mm (closed) Weight About 90g Power CR2032 battery Operating environment Temp 0-50℃，H <90%RH Accessories Carrying box, Instruction, Battery Origin: CHINA