Temperature Humidity Sensor Probe High Accuracy Low Consumption Soil Moisture Sensor Probe 3.3V Item Type: Temperature Humidity Sensor Probe Model: FS400 SHT41 Operating Current: Less than 15mA Humidity Accuracy: ±2%RH Temperature Accuracy: ±0.2℃ Working Voltage: 3.3V Temperature Measurement Range: -20-100℃ Humidity Measurement Range: 0-100%RH Communication Interface: I²C Working Conditions: -20℃-90℃，0-99%RH Storage Conditions: -20℃-80℃, 0-95%RH Case: Copper, plastic Wire Length: Approx. 150cm / 59in Features 1. Digital with resolution up to 14 bits; 2. Internal self calibration, no calibration required; 3. Close integration of temperature and humidity for easy use in dew point measurement; 4. Showerproof, dustproof, rustproof, high reliability and long term stability Caution Air relative humidity is a function of temperature, air temperature has a great impact on relative humidity, acids, bases, salts and other compounds have a significant impact on the physical properties of water vapors, the following matters should be noted when using: 1. The temperature and humidity sensor should be installed in a place where the temperature is relatively stable represents the measured ambient temperature and humidity. 2. Avoid installation in places where the temperature changes drastically. 3. Avoid installation in places where the air flowing intensely. 4. Avoid installation in corners where the air does not flowing. 5. Avoid using in an environment with salt spray. 6. Avoid using in corrosive gas environment. Operating conditions The sensor performs properly within the recommended operating range. Long term exposure to conditions outside the normal range, especially at humidity > 80%, may cause temporary drift of the signal (drift and 3% RH after 60 hours). Upon return to normal operating conditions, the sensor will slowly self revert to the corrected state. Prolonged use under abnormal conditions will accelerate the aging of the product.