DHT11 Temperature & Humidity Sensor

DHT11 Digital Temperature & Humidity Sensor

The DHT11 is an ultra-reliable, low-cost digital composite sensor for measuring ambient temperature and relative humidity. Utilizing a resistive humidity sensing component and an NTC temperature thermistor connected to an 8-bit microcontroller, it outputs calibrated digital signals over a single-wire serial protocol.

Specifications

• Temperature Range: 0°C to 50°C (±2°C accuracy)
• Humidity Range: 20% to 90% RH (±5% accuracy)
• Operating Voltage: 3.3V to 5.5V DC
• Interface: Single-wire bi-directional digital serial
• Sampling Rate: 1 Hz (one reading every 1 second)
• Low power consumption: 0.5-2.5 mA during conversion