1、The sensor probe provides low power consumption, high accuracy, and more sensitive response. 2、With ℃/°F one‑key switching function, you can choose the measurement unit according to your needs of use. 3、Large‑screen backlight display can display temperature and humidity at the same time, and the backlight can be turned on in a dark environment. 4、There is a concealed bracket on the back of the thermometer hygrometer, which can be opened or closed according to the needs of use. 5、Easy to use, you only need to install the battery and press the power button to measure the indoor temperature and humidity. Item Type: Thermometer Hygrometer Material: ABS+LCD Model: TA8171 Temperature Range: -10°C~50°C/14°F~122°F Humidity Range: 5.0%RH~98%RH (the probe cannot be placed in water) Temperature Measurement Accuracy: ±1.5℃ Humidity Measurement Accuracy: (10~40%RH)±5%RH; (41-80%RH)±4%RH; (81~98%RH)±5%RH Humidity Resolution: 0.1 %RH Temperature Resolution: 0.1°C/ 0.1°F Power Supply: 2 x 1.5V AAA battery (battery not included) 1 x Thermometer Hygrometer (Battery Not Included) 1 x Black Packaging Bag 1 x English Manual