Feature: 1. HIGH ACCURACY CHIP: The sensor probe uses the 4X series chip and is built on the newly optimized for CMOSens chip, features low power consumption, high accuracy specifications and a maximum supply voltage range of 3.3V, which is ideal for mobile and battery driven applications. The integrated PTFE filter membrane provides additional particle protection with humidity accuracy of ±3%RH and temperature accuracy of ±0.2℃, enabling the sensor to operate in harsh conditions 2. STRONG PRACTICABILITY: Sensor probe is suitable for monitoring in computer room, HVAC, weather station, warehouse, site concrete test block detection, agricultural greenhouse, flowers, nursery and soil temperature and humidity measurement 3. STRONG FUNCTIONALITY: Sensor probe has complete calibration, digital output, IIC interface, I2C serial interface, easy to integrate, the relative humidity of air is a function of temperature 4. RELIABLE AND DURABLE: The temperature and humidity sensor probe adopts advanced batch processing technology and excellent hardware design, with high reliability, long term stability and long life 5. LIGHTWEIGHT AND COMPACT: The temperature and humidity sensor probe is small in size and light in weight, easy to carry and install, and does not take up too much space Specification: Item Type: Temperature Humidity Sensor ProbeOperating Current: < 10mA Humidity Accuracy: ±3%RH Temperature Accuracy: ±0.2℃ Operating Voltage: 3.3V Temperature Measurement Range: -20℃~100℃ Humidity Measurement Range: 0 to 100 percent RH Communication Interface: I²C Working Condition: -40 ℃~125℃, 0~ 99% RH Storage Conditions: -20 ℃~80℃, 0~ 95% RH Shell: 304 Stainless steel IP67 waterproof Line Length: Approx. 150cm / 59.1in. Package List: 1 x Temperature Humidity Sensor Probe Note: Air relative humidity is a function of temperature, air temperature has a great impact on the relative humidity, acid, alkali, salt and other compounds have a significant impact on the physical properties of water vapor, should pay attention to the following matters:1. The temperature and humidity sensor should be installed in a place where the temperature is relatively stable and can best represent the measured ambient temperature and humidity.2. Avoid installation in places with drastic changes in temperature.3. Avoid installation in places with intense air flow.4. Avoid installation in the dead angle where the air does not flow.5. Avoid using in the environment with salt spray.6. Avoid use in corrosive gas environment.7. The power supply voltage range is 3.3V. The recommended power supply voltage is 3.3V. A 100nF decoupling capacitor is connected between the internal power supply and the ground. 9.2 serial clock input.8. The humidity sensor is not an ordinary electronic component and needs to be carefully protected. Users must take this seriously. Prolonged exposure to high concentrations of chemical odors can cause sensor readings to drift.9. The performance of the sensor is normal within the recommended working range. Long term exposure to conditions outside the normal range, especially when the humidity is >80%, may cause temporary signal drift(drift after 60 hours +3%RH). When the sensor is restored to normal working conditions, it will slowly recover to the correct state. Long time use under abnormal conditions will accelerate the aging of products.