2pcs Wireless App Control Accurate Temperature Humidity Monitor MeterHigh-precision sensor: - Built-in sensor refreshes every second, providing more accurate and faster data. The temperature error can be within 0.5(1), and the humidity error can be within 5%. Using Bluetooth 5.0 chip, the temperature sensor provides real-time wireless monitoring of temperature (-20-60) and humidity (0-99RH). APP Wireless Control: - Temperature sensor uploads data to APP when connected via Bluetooth. You can check the maximum and minimum values of temperature and humidity through the mobile APP. Supports Android 4.3 or above, or above smart devices. Additionally, you can see the temperature and humidity on this 1.5-inch screen. - The wireless temperature and humidity meter records data in the APP every 10 minutes for a total of 100 days.Design Mini and Portable: - Wireless temperature humidity sensor is smaller than other sensors. Built-in CR2477 battery, battery life is about 1 year, the battery can be replaced by itself after the battery is exhausted. The hanging holes are designed to suit various positions you like.