features:¡ñmeasureanddisplaytheindoor/outdoortemperatureandindoorhumidity¡ñautomaticallymemorizethemax./min.valuesoftheindoor/outdoortemperatureandindoorhumidity¡ñswitchbetween¡æ/¨h¡ñclockfunctionandalarmingfunction¡ñ12/24hourmodeswitch¡ñ8minutessnoozefunction¡ñrecoveryfunctiononthemax./min.valuestechnicalparameters:¡ñindoortemperaturemeasuringrange:-30¡æ¡« 50¡æ(-22¨h¡«122¨h)¡ñoutdoortemperaturemeasuringrange:-50¡æ¡« 70¡æ(-58¨h¡«158¨h)¡ñindoorhumiditymeasuringrange:20¡«99(relativehumidity)¡ñdifferentialrate:temperature:0.1¡æ;humidity:1rh¡ñpowersupply:oneaaaalkalinebattery¡ñoperationalenvironment:temperature:0¡æ¡«50¡æ;humidity:5¡«85rh