Features Temperature Humidity Sensor : The temperature and humidity sensor probe is a cable type sensor in the digital temperature and humidity sensor series. Long-term Stability : Using the world's advanced temperature and humidity sensors as the core components to ensure high reliability and excellent long-term stability. The sensor outputs a calibrated digital signal in a standard I2C format Excellent Quality :It has the advantages of excellent quality, high protection level, ultra-fast response, strong anti-interference ability and high cost performance. Wide Use : Can be applied in computer room monitoring, HVAC, weather station, warehouse, construction site, concrete test block inspection, agricultural greenhouse, flower nursery and soil temperature and humidity measurement. High Performance: Waterproof, dustproof, rustproof, resistant.the product has the advantages of excellent quality, high protection level, ultra-fast response, strong anti-interference ability and high cost performance. Specification: Condition: 100% Brand New Item Type: Temperature and Humidity Sensor Model: FS304-SHT20/FS304-SHT21/FS304-SHT25 (Optional) Working Current: <10mA Temperature Measurement Range: -20 ° C ~ 100 ° C Humidity Measurement Range: 0~100%RH Working Conditions: - 40 ° C ~ 125 ° C, 0 ~ 99% RH Storage Conditions: - 20 ° C ~ 80 ° C, 0 ~ 95% RH Shell: 304 stainless steel, IP67 waterproof Line Length: Approx. 150cm / 59.1in Weight: 61 g / 2.2 oz(approx.) Model Humidity Accuracy (%RH) Temperature Accuracy (°C) Voltage (V) SHT20 ±3 ±0.3 3.3 SHT21 ±2 ±0.3 3.3 SHT25 ±1.8 ±0.2 3.3   Package List: 1 x Temperature and Humidity Sensor 1 x Line Mark   Working Conditions: The sensor has normal performance within the recommended operating range. Long-term exposure to conditions outside the normal range, especially at humidity >80%, may result in temporary signal drift (after 60 hours drift +3% RH). When returning to normal After the working conditions, the sensor will slowly return to the calibration state. Prolonged use under abnormal conditions will accelerate the aging of the product. Package List