Product Details Ⅰ. Wifi + Bluetooth dual mode enables faster network connection compared to Wifi only Ⅱ. High and low temperature alarm sends phone notifications when set temperature is exceeded Ⅲ. High and low humidity alarm triggers phone alerts upon exceeding set humidity levels Ⅳ. Real-time monitoring with low power consumption, operating for approximately 1 year under default settings Ⅴ. Temperature and humidity curve displays data changes graphically on the APP for intuitive tracking Ⅵ. Temperature unit switch allows conversion between Celsius and Fahrenheit as needed Ⅶ. Third-party voice support works with Alexa and Google Home Assistant for voice temperature and humidity updates Specification Ⅰ. Material: plastic Ⅱ. Colour: Black Ⅲ. Power supply: AAA1.5V2 (battery not included) Ⅳ. Wi-Fi support: 2.4G IEEE 802.11 b/g/n Ⅴ. Temperature measurement range: -10℃~55℃ (-14°F~131°F) Ⅵ. Temperature accuracy: ±0.3℃ Ⅶ. Humidity measurement range: 10%~99% RH Ⅷ. Humidity accuracy: ±3% RH Ⅸ. Data update frequency: 1-120 minutes (adjustable) Package Contents Ⅰ. 1 x Wireless Temperature and Humidity Sensor Warm Tips Ⅰ. Battery power supply requires AAA1.5V2 (not included) Ⅱ. Smaller data update frequency values result in shorter battery life Ⅲ. Light reflection and different displays may cause slight colour differences from the real product Ⅳ. Measurement allowed error is +/- 1-3cm