Item Name: Air Thermometer Handheld Hygrometer Gauge Tester Temperature Humidity Meter. Battery Type: 3 * 1.5V AAA (not included)100% Brand new high qualitySize: 171.4*56.1*29.8mmModel: ANENG GN401Color: BlackFeature:High-precision digital temperature and humidity sensor, high precision, high response speedHD color LCD displayTemperature unit can be selected:C/FMaximum and minimum measurement: MAX, MINScreen lock: HOLDDew point temperature measurementWet bulb temperature measurementOver-range promptLow battery meets prompt Specification:Humidity:Range: 0~100%RH Range: 45~75%RH Accuracy 3.0%RH Others 4.5%RHEnvironment temperature:Range -20C~70C Accuracy 1C-4F~158F accuracy 1.8FDew point temperature:Range -20C~70C Accuracy 1.5C-4F~158F accuracy 2.7FWet bulb temperature:Range -20C~70C Accuracy 1.5C-4F~158F accuracy 2.7FDigital update 0.5SAutomatic shutdown: 15 minutes of automatic shutdown under no operationOperating temperature and humidity -20C~60C/-4F~140F 10%RH~90%RHStorage temperature and humidity -20C~60C/-4F~140F 10%RH~75%RHPower supply: 3 * 1.5V AAA (not included) Package:1 * Manual1 * Packing box1 * GN401 Thermohygrometer *Please make