DHT11 Temperature & Humidity Sensor Module

The DHT11 Temperature & Humidity Sensor Module is one of the most popular beginner-friendly sensors for measuring basic indoor climate conditions. The module integrates the DHT11 sensing element and the required supporting components on a compact PCB, making it easier to connect than the bare 4-pin sensor package. It provides a calibrated digital signal output, so a microcontroller can read temperature and relative humidity without using an external ADC or analogue signal conditioning circuit. Inside the DHT11, humidity is measured using a resistive-type humidity sensing component, while temperature is measured using an NTC temperature element. A built-in 8-bit microcontroller processes the measurement and sends data over a single-wire digital interface. This makes the module suitable for Arduino UNO/Nano/Mega, ESP8266 NodeMCU, ESP32, Raspberry Pi GPIO projects and many embedded development boards. The sensor is designed for non-condensing environmental monitoring and is best suited for room-temperature applications rather than industrial precision measurement. For makers and students, this DHT11 module is a practical choice for mini weather stations, smart home prototypes, greenhouse monitoring demos, humidity-triggered fan control, classroom IoT experiments, data logging and display projects using LCD/OLED modules. Typical module pinout is VCC, DATA/SIGNAL and GND; many breakout boards mark these as +, OUT/S and -. Connect VCC to 3.3V or 5V as supported by your controller, GND to ground and DATA to a digital input pin. Use a DHT library such as the common Arduino DHT sensor library for fast setup. Package includes 1 x DHT11 Temperature & Humidity Sensor Module. Header pins may be pre-soldered or supplied depending on batch/module style.