Features: 1. Digital design with resolution up to 14 bits 2. Internal self-calibration, no external calibration required 3. Integrated temperature and humidity sensing for convenient measurement 4. High reliability and long-term stability 5. I2C serial interface for easy integration 6. Compact design suitable for field applications and product integration 7. Ideal for use in computer room monitoring, warehouses, construction sites, concrete testing, agricultural greenhouses, flower nurseries, and similar environments Specifications: Condition: Item Type: Temperature Humidity Sensor Model: FS400-SHT20/21/25 Working Current: < 1 mA (typical) Supply Voltage: 1.8–3.6 V DC Temperature Range: -40°C to +125°C Humidity Range: 0–100% RH Interface: I2C digital interface Accuracy: ±2% RH (typical), ±0.3°C (typical) Notes: Exposure to condensation or humidity levels above 80% may cause temporary signal drift (e.g., +3% RH after 60 hours). Once returned to normal operating conditions, the sensor will gradually recover to its calibrated state. Prolonged operation under extreme conditions may accelerate aging. Storage and Handling: Humidity sensors are sensitive components and require proper handling. Avoid prolonged exposure to high concentrations of chemical vapors, as this may cause sensor drift. Store in a dry, clean environment when not in use.