Features: * indoor & outdoor temperature display * highest/lowest outdoor temperature alarm function *Frost point alarm:-1℃～+4℃ (+30.2℉～+39.2℉) * Memorized MAX/MIN values of indoor/outdoor temperature * temperature unit℃/℉changeable * LED alarm indicator light Temperature Range: indoor：-10℃～50℃（+14℉～+122℉） outdoor：-50℃～+70℃(-58℉～+158℉) Product Dimension: 65×59×18mm Power-supply: 1.5V(AG13)×1 Package: 2x temperature alarm
