Geevon Bluetooth Thermometer Hygrometer, Indoor Temperature Humidity Sensor with HD Display, App Notification Alert, Historical Data Storage and Export(4 Pack )

The Geevon indoor Bluetooth temperature and humidity sensor features a Swiss high-precision sensor. with temperature accuracy of ±1℃ (±1.8°F) and humidity accuracy of ±5%RH, refreshing data every 2 seconds. It enables stable local real-time monitoring via Bluetooth connection to the smart home app without Wi-Fi or internet access. This humidity meter features an easy-to-read e-ink display that remains clearly visible under various lighting conditions, complete with a facial expression comfort indicator. The hygrometer is powered by a button cell battery (included), with a battery life of up to 12 months. The indoor thermometer supports local storage of historical data within the app—users can view and export temperature and humidity records from the past year, along with clear trend graphs. Ideal for environmental monitoring in wine cellars, basements, greenhouses, and other critical spaces.

• ‌【Reliable Bluetooth Connectivity for Local Monitoring】This Geevon indoor bluetooth temperature sensor maintains a stable connection via Bluetooth to the Smart Home App, allowing you to easily monitor real‑time temperature and humidity data directly on your smartphone when within range—no Wi‑Fi setup or internet access required.
• 【Face Icon Comfort Indicator】Instantly assess your environment with the clear face icon display on this remote temperature monitor. A happy face confirms ideal conditions when both temperature (18°C–28°C / 64.4°F–82.4°F) and humidity (40%–65% RH) are within the optimal comfort range. An unhappy face immediately alerts you when readings fall outside these parameters—providing a visual prompt to adjust your humidifier, dehumidifier, or air conditioner to maintain a comfortable and healthy space.
• 【High-Precision Readings with a Precision Sensor】Equipped with an accurate Swiss-made sensor, this smart thermometer hygrometer delivers reliable measurements. Temperature is precise to ±1℃ (±1.8°F), and humidity accuracy reaches ±5%RH. With data refreshing every 2 seconds, you receive consistently up-to-date readings.
• 【Clear Electronic Ink Display & Long Battery Life】Featuring an easy-to-read electronic ink screen that remains visible in various lighting conditions, this bluetooth temperature humidity monitor is designed for clarity. Improved product quality supports an extended battery life of approximately 12 months using a button cell battery.
• 【One-Year Data Export & Trend Tracking】View and download temperature and humidity records from the past year directly in the app. This bluetooth home temperature monitor stores historical data locally and displays clear trend graphs, making it easy to track conditions in wine cellars, basements, greenhouses, and other key spaces—all without Wi‑Fi.