Temperature and humidity measuring device

Operation guide for temperature. & Humidity meter- large LCD screen- high accuracy and stability- multifunctional- low power consumptionCustomization- temperature rangeIndoor unit: -10°C ~ +50°C (+14°F ~ +122°F)Outdoor: -50°C ~ +70°C (-58°F ~ +158°F)(if the meter has an external temperature transmitter)- humidity range: indoor 20% ~ 99% relative humidity(when humidity is 20% relative humidity, display 10% relative humidity directly)- power source: 1.5V (AAA size) × 1Tasks- display indoor/outdoor temperature, display indoor humidity- temperature unit C / F adjustable- memory of maximum / minimum temperature and humidity values- two time display modes: 12 hours / 24 hours- clock and date display function, automatic switching every 5 seconds between clock and date- hourly alarm function- daily alarm function- install external temperature sensor, automatically alternates display of indoor and outdoor temperature every 5 seconds (only for typical models)