The DHT11 is a reliable, low-cost digital temperature and humidity sensor, ideal for basic environmental monitoring projects. It combines a capacitive humidity sensor and thermistor, delivering calibrated digital output via a single data pin – no analog input required. Operating from 3.3V to 5VDC, it provides humidity readings from 5–95% RH (± 5% accuracy) and temperature from –20°C to 60°C (± 1°C accuracy). With a 2-second sampling rate and low power consumption, it’s well-suited for Arduino, ESP32, and other microcontroller applications.
Features / Specs
- Brand / Manufacturer: Generic
- Sensor: Genuine ASAIR (AOSONG) DHT11
- Operating Voltage Range: 3.3V – 5VDC
- Power Consumption: Sleep @ 60μA / Measuring @ 1000μA
- Low Level Output Voltage: 0 ~ 300mV
- High Level Output Voltage: 90 ~ 100% VDD
- Low Level Input Voltage: 0 ~ 30% VDD
- High Level Input Voltage: 70 ~ 100% VDD
- Sampling Period: 2 seconds
- Relative Humidity:
- Measuring Range: 5 ~ 95% RH
- Repeatability: ± 1% RH
- Accuracy: ± 5% RH
- Response Time: < 6 seconds
- Hysteresis: ± 0.3% RH
- Drift: < 0.5% RH / year
- Temperature:
- Measuring Range: -20°C to +60°C
- Repeatability: ± 2°C
- Accuracy: ± 1°C
- Response Time: 5 ~ 30 seconds
- Hysteresis: ± 0.3°C
- Drift: < 0.5°C / year
- Header Pin Pitch: 2.54mm
- Dimensions: ~(31.9mm x 14.6mm x 7.6mm)
- Mounting Hole Diameter: ~3.7mm