The DHT11 Digital Temperature & Humidity Sensor Module is a popular, beginner-friendly sensor for measuring ambient temperature and relative humidity in DIY electronics projects. It combines both readings in one compact board and outputs the data digitally using a simple single-wire protocol, making it easy to integrate with Arduino and Raspberry Pi projects using widely available libraries.
This module is perfect for basic environmental monitoring such as room climate tracking, small DIY weather stations, greenhouse monitoring, IoT prototypes, and educational STEM projects. Because it’s a module (not just the bare sensor), it typically includes the needed resistor/pull-up and pins for quicker prototyping.
| Item | Typical Value |
|---|---|
| Sensor | DHT11 |
| Measurements | Temperature + Relative Humidity |
| Temperature Range | 0°C to 50°C |
| Humidity Range | 20% to 90% RH |
| Accuracy (Typical) | ±2°C (temp), ±5% RH (humidity) |
| Output | Digital single-wire protocol |
| Supply Voltage | 3.3V–5V DC |
| Update Rate | ~1 reading per second |
Note: For higher accuracy and wider range, consider DHT22/AM2302. DHT11 is best for basic monitoring and learning projects.
Most DHT11 modules use:
| Pin | Function |
|---|---|
| VCC | 3.3V–5V power |
| DATA | Digital output to MCU GPIO |
| GND | Ground |
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