The ventilation holes of the product should not be immersed in water. Once the product is fixed to the wall, do not remove it violently to avoid damaging the product or the wall. Please keep away from harsh environments with high humidity. This product is used for healthy living, not as a measuring tool. Product parameters: Product model: Multifunctional mini temperature and humidity meter Battery type: CR2032 (installed) Temperature measurement range: -50°C-+70°C (-58°F-+158°F) Temperature measurement accuracy: +1 C (1.8 °F) Temperature resolution: 0.1 C (0.2 °F) Humidity measurement range: 10% -99% Humidity measurement accuracy: ±5% Humidity resolution: 1% Features: Air comfort indicator High accuracy and refreshing Multiple options and widely used Easy to read and use Size: 43 x 13 mm Material: ABS Color: White Package Contents: 24 x Thermometer Hygrometer (Battery included) Only the above package content, other products are not included. Note: Light reflection and different