-20/60°C Thermometer Thermo-Hygrometer Highly Accurate Temperature Humidity Comfort Level Detect LCD Display Indoor Black/White Features: 1.LCD digital display high-definition screen, warm and cold, dry and wet, clearly visible at a glance. 2.Multi-function thermo-hygrometer: temperature display, humidity display, comfort level display. 3. Multiple scenes at will: can be placed on the workbench, can also be affixed to the wall. 4. /˚F unit conversion: Celsius and Fahrenheit display can be switched to meet daily needs. 5. Low power consumption temperature and humidity sensor, rapid and more accurate sensing, indoor multi-scene applicable. Specification: Temperature measurement range: -20/60/(-4℉/140℉) Temperature measurement accuracy: ±1/(1.8℉) Temperature Resolution: 0.1/(0.2℉) Humidity range: 20/RH-99/RH Humidity measurement accuracy: ±5/RH Humidity resolution: 1/ Battery: 3V CR2032 button battery/1 Product size: 63/63/17mm Display size: 43mm in diameter Product color: black, white (customer/x27;s choice) Operation method. 1. In the off state, long press for 1.5 seconds to turn on the machine. 2. Under power on state, double click the button to switch the temperature unit /℉. 3.In power on state, long press 1.5 seconds to turn off the power. Package include: Package A:Thermo-Hygrometer/1 (built-in battery) Package A:Thermo-Hygrometer /1 (without battery)