Application: Installation, debug and repair for refrigeration industry, ventilation duct, environment monit-or, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire department. Model:AM4836V Display 0.5”(13mm)4-digitLCD Measurement unist Air Velocity:m/s,km/h,ft/min,knots Air Flow:CMM(m3/min) CFM(ft3/min) Beaufort scale:Force Wave Height:m TEMP:℃&℉ Data hold MaxIMum Value Data memorized 24groups Sampling rate reading per second approx Sensors air velocity/flow sensor: Conventional angled vane arms Wa\ith low-friction ball bearing Temperature sensor: Precision thermistor Automatic Power off 0-9minutes set by users Data output RS232C serial interface Operating temperature 14℉to140℉(-10℃to60℃) Operating humidity Max.80%RH Power supply 260g(0.571b)including batteries&probe Dimensions main instrument: 156x67x28mm(6.1x2.6x1.1”) Optional accessories Cable+software for RS232C