Indoor Temperature And Humidity Monitor Thermometer Hygrometer With Perpetual Calendar 1. Temperature range: -20~60 degrees Celsius (-4~140 degrees Fahrenheit), error: +-0.5 degrees Celsius 2. Humidity range: 10~99%RH, error: +-3%RH; 3. Temperature and humidity are refreshed every 10 seconds; 4. Comfort: Orange, green and blue color bars display. When the humidity is less than or equal to 29%, the triangle points to DRY; when the humidity is greater than or equal to 30% and less than or equal to 70%, the triangle points to COMFORT; when the humidity is greater than or equal to 71%, The triangle points to WET; 5. Display time (AM, PM: displayed in 12-hour format, not displayed in 24-hour format), date and week on the same screen; 6. Function buttons: three in total, SET (setting), +FahrenheitCelsius (increase, CelsiusFahrenheit conversion), -1224 (decrease, 1224 hour format); 7. Power supply method: Use two CR2032 batteries (included) to supply power in parallel, doubling the standby time. 8. Shell material: ABS engineering plastic 9. Product size: 93 x 73 x 19mm 10. Display size: 76 x 51mm 11. Placement method: bracketsuspendedmagnet adsorption 12. Net weight: 72 grams Instructions: 1. After the product is powered on, press the SET button, and the date number will flash. At this time, press + or to adjust the value. After adjusting, press the SET button again to adjust the year, month and day respectively. After adjusting one item, press the SET button to enter. Next item, finally adjust the hours and minutes of the time, and press the SET key to exit; 2. The temperature, humidity, comfort level, time, date and day of the week are displayed on the same screen. The numbers are clear and clear at a glance; 3. Increase, CelsiusFahrenheit conversion key. After pressing the SET key, the function of this key is to increase; press this key alone to convert between Celsius and Fahrenheit; -1224 (decrease, 1224 hour format) key. After pressing the SET key, the function of this key is