Feature: 1. ACCURATE AND RELIABLE: FS304 Temperature and humidity sensor probe is a cable sensor in the digital temperature and humidity sensor series, output calibrated digital signals in standard IIC format, using world most advanced temperature and humidity sensor as the core component, humidity accuracy ±2%RH, temperature accuracy ±0.2℃, to ensure high reliability and excellent long term stability 2. POWERFUL AND HIGH RESOLUTION: The temperature humidity sensor probe adopts the case of 4x series and the chip of 3x series, more powerful to use, with higher accuracy, digital, resolution up to 14 bits 3. 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 4. 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 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 6. SELF CALIBRATION AND DUSTPROOF: Temperature humidity sensor internal self calibration without calibration, temperature and humidity closely combined, convenient for dew point measurement, rain, dust and rust prevention Specification: Item Type: Temperature Humidity Sensor Probe Operating Current: <15mA Humidity Accuracy: ±2%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: -20 ℃~90℃, 0~ 99% RH Storage Conditions: -20 ℃~80℃, 0~ 95% RH Shell: 304 Stainless steel and plastic Line Length: Approx. 300cm / 118.1in. 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.8. 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.