Product description
DHT11 is a digital temperature and humidity sensor with a calibrated digital output. The sensor contains a resistive sensing element for humidity and an NTC element for temperature measurement. The measured values are processed internally by an 8-bit microcontroller and transmitted via a serial single-wire interface. For connection cables shorter than 20 m, a 5.1 kΩ pull-up resistor between VCC and DATA is required (not included).
Specifications:
- Model: DHT11
- Sensor type: Temperature and humidity sensor
- Supply voltage: 3–5.5 VDC
- Humidity measurement range: 20–90 % RH
- Humidity accuracy: ±4 % RH
- Humidity resolution: 1 % RH
- Temperature measurement range: 0–50 °C
- Temperature accuracy: ±2 °C
- Temperature resolution: 1 °C
- Interface: Serial single-wire
- Sampling interval: 1 s
- Current consumption during measurement: 0.5–2.5 mA
- Connection: 4-pin, single-row
Connections:
- Pin 1: VDD
- Pin 2: DATA
- Pin 3: GND
- Pin 4: GND
