1. Temperature: The default temperature unit when installing the battery is ℃; 2. In normal mode, press [] briefly to switch the temperature between Fahrenheit and Celsius; 3. Temperature measurement range: - 9.9 ℃-60 ℃ (14.2 ℉-140 ℉); (When the temperature is low LL is always displayed at - 9.9 ℃ L; When the temperature is higher than 60 ℃, HH. H is always displayed; 4. Temperature measurement error: ± 1 ℃ (0 ℃-40 ℃), ± 2 ℃ (40 ℃-60 ℃) 5. Temperature accuracy: 0.1 ℃;<br><br>6. Detection cycle: 120 seconds; 7. Humidity measurement range: 0%-99% RH; (When the humidity is lower than 0%, it is always displayed 0%; Above 99%, it always shows 99%) 8. Humidity measurement error: ± 5% rh (15 ℃~ 40 ℃, 40 ~ 80 ℃); 9. Detection cycle: 120 seconds; 10. Hr/24Hr; AM/PM sign display in 12 hour system 11. Briefly press the [] touch key to turn on the backlight for 10s and then it will turn off automatically. 12. APP download and installation [Tuya Smart APP] Colour:White Material:plastic<br><br>Package Contents: 1 x Temperature & Humidity Sensor<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.