4x Home Freezer LED Alarm Fridge Digital Thermometers ℃/℉ Hygrometer Temperature
◆ LED alarm indicator light. ◆ Highest/lowest outdoor temperature alarm function. ◆ Frost point alarm:-1℃～+4℃ (+30.2℉～+39.2℉). ◆ Indoor & outdoor temperature display. ◆ Temperature unit℃/℉changeable.