Feature:1. Wireless App Control: We uses a high-end BT 5.0 chip and can easily monitor temperature and humidity data remotely on app (free downloading from App Store and Google Play). Up to 5 meters connecting distance (no obstacles) enables you to monitor temp and humidity remotely.2. Higher Accurate Monitor: Using an accurate and sensitive temperature and humidity sensor, it can achieve a temperature error of ±1℃(33.8℉), a humidity error of ±5%, and refresh once per second for higher accuracy.3. Data Storage Export: Support temperature data export function, record a group of data every 10 minutes, can store up to 1 year of data.4. Third-party Voice Control: Support enquiring about temp, humidity via Amazon and Google smart speaker after the sensor is added to BT gateway.5. Mini & Portable Design: With a compact design, it is easy to be carried when you go outside. The hygrometer is equipped with suspension holes. You can hang it on your back bag when you hiking.Specification:Small, compact size, our smart hygrometer can be used in many locations such as a baby room, greenhouse, humidor, cellar, and more. The humidity monitor has large LCD and clear numbers, you can more easily read the LCD screen from any angle.Features:Wireless App Control: We uses a high-end BT 5.0 chip and can easily monitor temperature and humidity data remotely on app (free downloading from App Store and Google Play). Up to 5 meters connecting distance (no obstacles) enables you to monitor temp and humidity remotely. Higher Accurate Monitor: Using an accurate and sensitive temperature and humidity sensor, it can achieve a temperature error of ±1℃(33.8℉), a humidity error of ±5%, and refresh once per second for higher accuracy.Data Storage Export: Support temperature data export function, record a group of data every 10 minutes, can store up to 1 year of data. Third-party Voice Control: Support enquiring about temp, humidity via Amazon and Google smart speaker after the sensor is added to BT gateway.Mini & Portable Design: With a compact design, it is easy to be carried when you go outside. The hygrometer is equipped with suspension holes. You can hang it on your back bag when you hiking.Specifications:Material: ABSBattery: DC 3V, CR2477Wireless Connection: BT 5.0 BLETemperature Measure Range: -9.9℃~60℃/14.18℉~140℉Temperature Accuracy: ±1℃ (33.8℉)Humidity Measure Range: 0%RH~99% RHHumidity Accuracy: ±5%RHItem Size: 48 * 48 * 16mm / 1.89 * 1.89 * 0.63inItem Weight: 34g / 1.19ozPackage Weight: 55g / 1.94ozPackage Size: 12 * 8.3 * 2.2cm / 4.72 * 3.27 * 0.87inPackage List:1 * Smart Hygrometer1 * User Manual (English)Package List:1 * Smart Hygrometer1 * User Manual (English)