1.wind speed and wind temperature 2.0~30m/s,-10~45C 3.MAX/MIN/ ... , electric leakage switch tester,gas detector.2. Specification ModalTL816measuring itemswind speed/ wind temperaturemeasuring rangewind speed0~30m/s, 1.4~90km/h, 0 ... /hwind temperature-10~45º C, 14~113º Faccuracywind speedaccuracy:± 5%wind temperatureaccuracy: ± 2º Cresolution0.2º C, 0.2m/sLCD digital display ...