816B Digital Anemometer Portable Wind Speed Sensor Meter Measuring Instruments with Backlit LCD Display Condition: Item Type: Digital Anemometer Material: Plastic Color: As shown in the picture Extension Cable: Approx.1m/3.3ft Five Units of Air Speed: M/s, Km/h, ft/min, knots, MPH Model 816B Wind Speed range Unit Range Resolution Accuracy M/S 0~45 0.1 ±3% Feet/minute 0~8800 19 Knots 0~88 0.2 Km/h 0~140 0.3 MPH 0~100 0.2 Temperature range Unit Range Resolution Accuracy ℃ 0℃~45℃ 0.2 ±2℃ ℉ 32℉~113℉ 0.36 ±3.6℉ Feature Cold wind indicator √ Beaufort scale display √ ℃/℉, switchable √ Data hold √ Maximum/Minimum/average √ Backlight √ Auto/manual shutdown √ USB connection for wind vane and display √ Thermometer sensor NTC temperature sensor Operating conditions -10℃~50℃(14℉~122℉)/≤RH Power supply 1 x 9V battery(Not included)