Features 1、Latest Chip: This soil temperature and humidity sensor is based on the 4X family of chips, the SHT4x is built on a new optimised for CMOSens chip with low power consumption and high accuracy specifications and a supply voltage range of up to 3.3V, making it ideal for mobile and battery driven applications. 2、Filter Membrane Protection: The SHT4x PTFE filter membrane integrated into this soil temperature and humidity sensor provides additional particle protection with ±1.5% RH humidity accuracy and ±0.1°C temperature accuracy, allowing the sensor to operate in harsh conditions. 3、Wide Application: The soil temperature and humidity sensor is used in server room monitoring, HVAC, weather stations, warehouses, construction sites, concrete test blocks, agricultural greenhouses, flowers, nurseries and soil temperature and humidity measurement. 4、Highly Functional: This soil temperature and humidity sensor has a fully calibrated, digital output, IIC interface and an I2C serial interface for easy integration. The relative humidity of the air is a function of temperature. 5、High Reliability: This soil temperature and humidity sensor probe uses advanced batch processing technology and reliable hardware design for high reliability and long life. 6、Lightweight And Compact: The small size and light weight of this soil temperature and humidity sensor probe makes it easy to carry and install without taking up too much space. 7、Long Term Stability: This soil temperature and humidity sensor is characterised by high reliability and long term stabilityd. Humidity sensors are not ordinary electronic components and require careful protection. The user must take this seriously. Specification Item Type: Soil Temperature Humidity Sensor Material: 304 stainless steel Plastic Model: FS304 SHT45 Operating Current: <10mA Humidity Accuracy: ±1.5%RH Temperature Accuracy: ±0.1°C Operating Voltage: 3.3V Temperature Measurement Range: -20℃ to 100℃ Humidity Measurement Range: 0 to 100%RH Communication Interface: I²C Operating Condition: - 40°C to 125°C, 0 to 99%RH Storage condition: - 20℃ to 80℃, 0 to 95%RH Housing: 304 stainless steel IP67 waterproof Cable Length: Approx.150cm / 59.06in 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 vapour, 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 and best represents the measured ambient temperature and humidity. 2. Avoid installation in places where the temperature changes drastically. 3. Avoid installation in places with intense air flow. 4. Avoid installation in dead ends where the air does not flow. 5. Avoid using in salt spray environment. Avoid using in corrosive gas environment. Operating conditions The sensor performs normally within the recommended operating range, see Figure 1. prolonged exposure to conditions outside the normal range, especially at humidity > 80%, may result in a temporary drift of the signal (drift of 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 ageing of the product. Package List 1 x Soil Temperature Humidity Sensor