Temperature Humidity Sensor Probe Digital Soil Probe I2C Output Waterproof DC 3.3V Item Type: Temperature Humidity Sensor Probe Model: FS304-SHT35 Working Current: < 10mA Humidity Accuracy: ± 1.5%RH Temperature Accuracy: ± 0.1℃ Working Voltage: 3.3V Temperature Measurement Range: -20℃ ~ 100℃ Humidity Measurement Range: 0-100.0%RH Communication Interface: I2C Working Condition: -40℃ ~ 125℃, 0-99%RH Storage Condition: -20℃ ~ 80℃, 0~95%RH Shell: IP67 waterproof 304 stainless steel housing. Line Length: Approx. 300cm / 118.11in Operating Condition: The sensor works normally within the recommended operating range, please refer to the picture. Long term exposure to condition outside the normal range, especially when humidity exceeds 80%, may cause temporary signal drift, drift +3%RH after 60 hours. After returning to normal operating condition, the sensor will slowly self recover to the calibration state. Prolonged use under abnormal condition can accelerate the aging of the product.