Feature: 1. MEASURING RANGE: Soil moisture and temperature sensor, with a temperature measuring range of -20-100℃ and a humidity measuring range of 0-100%RH, with high accuracy and good reliability. 2. MULTIPLE FUNCTIONS: This soil sensor has strong functionality, complete calibration, digital output, IIC serial interface, easy to integrate, the relative humidity of the air is a function of temperature. 3. 304 STAINLESS STEEL: The sensor housing is made of 304 stainless steel material, which is corrosion and oxidation resistant, with IP67 waterproof grade, and can be used in harsh environments. 4. 3 METER CABLE: The soil temperature and humidity sensor is equipped with a 3 meter extension cable, which is unrestricted in use location and space, and can be used for a wider range. 5. APPLICABLE SCENES: The sensor is applicable to weather station, warehouse, construction site, concrete block detection, agricultural greenhouse, flower nursery, plantation and other places. Specification: Item Type: Soil Moisture Sensor Model: FS304 SHT30 Working Current: <10mA Humidity Accuracy: ±2%RH Temperature Accuracy: ±0.2℃ Working Voltage: 3.3V Temperature Measurement Range: -20-100℃ Humidity Measurement Range: 0-100%RH Comm Interface: I²C Working Condition: -40-125℃, 0-99%RH Storage Condition: -20-80℃, 0-95%RH Shell Material: 304 Stainless Steel Waterproof Grade: IP67 Cable Length: Approx. 300cm / 118.1in Working Condition: The sensor performs normally within the recommended operating range. Long term exposure to conditions outside the normal range, especially when humidity exceeds 80%, may cause temporary signal drift (after 60 hours drift x 3%RH). After returning to normal operating conditions, the sensor will slowly self recover to the calibration state. Prolonged use under abnormal conditions can accelerate the aging of the product.. Package List: 1 x Soil Moisture Sensor Note: The relative humidity of air is a function of temperature, and air temperature has a great impact on relative humidity. Various compounds such as acids, alkalis, and salts have a significant impact on the physical properties of steam. The following precautions should be taken when using: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 installing in places with drastic temperature changes.3. Avoid installing in areas with intense air flow.4. Avoid installing in dead corners where air does not flow.5. Avoid using in salt spray environments.6. Avoid using in corrosive gas environments.