DHT11 Digital Temperature & Humidity Sensor - 4-Pin Digital Output
The DHT11 is a basic digital temperature and humidity sensor module combining a capacitive humidity sensor and an NTC thermistor. It provides calibrated digital output via a single-wire serial interface, making it compatible with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontrollers.
Features
- Integrated capacitive humidity sensor and NTC thermistor for combined measurement.
- Calibrated digital signal output simplifies interface; no analog input required.
- Single-wire bidirectional serial communication protocol for easy microcontroller connection.
- Low power consumption suitable for battery-powered environmental monitoring projects.
- Compact 4-pin package with a 0.1″ pitch for straightforward breadboard and PCB integration.
Out of stock
The DHT11 sensor module provides a cost-effective solution for basic ambient temperature and relative humidity sensing. It utilizes a capacitive polymer film for humidity detection and a negative temperature coefficient (NTC) thermistor for temperature measurement. The sensor includes an onboard 8-bit microcontroller that handles signal conditioning, calibration, and serial communication, outputting fully digital data.
Communication is achieved via a proprietary single-wire serial protocol, requiring precise timing from the host microcontroller. A key operational constraint is its sampling rate; new data can only be requested once every 2 seconds to ensure sensor stability and accuracy. The module is designed for general indoor environmental monitoring within its specified operating ranges.
Additional Information
| Weight | 0.02 kg |
|---|---|
| Dimensions | 2.3 × 1.2 cm |
