Accurate and reliable measurements - The device is equipped with highly sensitive Sensirion temperature and humidity sensors with up to ± 0.5℃(± 1℉) accuracy for temperature and ± 5% for humidity. A refresh rate of once per second ensures you always have the latest readings. The data storage export function allows you to log temperature data every 10 minutes, storing up to 100 days of data. The app also alerts you with a red indicator light when the reading is outside the preset range, ensuring you are always aware of any fluctuations in your indoor environment. Compact and user-friendly design - Designed with functionality and aesthetics in mind, the upgraded hygrometer has a compact size of 12.4x6.5x1.8cm, making it easy to blend into any room. Its portable design means you can easily move it from room to room, ensuring you get accurate temperature and humidity readings wherever you are. The device is powered by a single AAA battery (not included in delivery), which lasts up to a year, and the battery can be easily replaced, making it a cost-effective solution for long-term monitoring. Whether you are a homeowner, gardener or professional who needs precise environmental data, this hygrometer thermometer is the perfect tool . Note:Due to different production batches, there are differences in printed labels, which does not affect usage. Colour:White Material:ABS Package Contents: 2 * -hygrometer sensor 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.