LCD Wireless Digital Thermometer: This thermometer has two parts: a transmitter and a receiver. You can place the transmitter outdoors and the receiver indoors to easily know the temperature in both places. Accurate measurement: The effective range of the temperature sensor is 30 meters, and the maximum outdoor range can reach 100 meters. Independently display indoor and outdoor temperatures with an error of less than 1°C. Wide range of uses: The indoor temperature display range is 0 to 60 °C, the outdoor display range is -40 to 60 °C. Suitable for different places and different climate zones. Such as offices, homes, kitchens, greenhouses, nurseries, warehouses, etc. Compact and portable: This mini thermometer is only the size of a palm and weighs about 100 grams. You can put it in your pocket, carry it with you, and use it anytime and anywhere. There is also a small hole on the back so you can hang it on the wall to save space. Durability: The digital LCD display is powered by two