Features:Screen lock function: screen lock, auto power off, overrange prompt.Convenient to carry: small and convenient to carry, high precision, fast response.High-definition color LCD display: HD color LCD display effect, let you see clearly, see the effect is good.Imported high-precision humidity and temperature sensor with high precision and fast response.Wide range of applications: equipment, laboratories, warehouses, computers, cold rooms, agricultural greenhouses.Digital temperature and humidity sensor: Ambient temperature / dew point temperature / wet bulb temperature can be measured.Specifications:Condition:100% NewMaterial: ABSColor: As shown in the pictureRange0~100%RHHumidityRange45~75RH%Accuracy3.0 RH%Other4.5 RH%Resolution0.1TemperatureRange20C~70C/ -4F~158FAccuracy- 1.0 C / 1.8 F;Resolution0.1Dew point temperatureRange20C~70C/ -4F~158FAccuracy1.5C / 22.7FResolution0.1RemarksAccuracy is based on environmental conditions of 25 C; 40 RH% ~ 100 RH%Lamp temperatureRange20C~70C/ -4F~158FAccuracy1.5C/2.7FResolution0.1Data update0.5SOperating conditions-20 C ~ 60 C / -4 F ~ 140 F, 10 RH% ~ 90 RH%Storage conditions-20 C ~ 60 C / -4 F ~ 140 F, 10 RH% ~ 75 RH%Power3 * 1.5V 'AAA' battery (not included)Battery lifeat least 50 hoursDimensions168*56*30.5mm / 6.6*2.2*1.2inWeight75gPackage List:1*Digital Temperature and Humidity Meter1*User Manual