DHT11

The DHT11 is a low-cost digital temperature and humidity sensor that provides calibrated digital output. It features a built-in NTC thermistor for temperature measurement and an 8-bit microcontroller for processing and outputting serial data for both temperature and humidity.

This sensor operates within a voltage range of 3.5V to 5.5V and consumes minimal current, making it suitable for various applications. The temperature measurement range is from 0°C to 50°C, with an accuracy of ±1°C. The humidity measurement range is from 20% to 90%, with an accuracy of ±1%.

The DHT11 outputs data in a serial format, which includes 8 bits for humidity integer data, 8 bits for humidity decimal data, 8 bits for temperature integer data, 8 bits for temperature fractional data, and an 8-bit parity bit. It is factory calibrated, simplifying integration with microcontrollers. The sensor is available as a component or as a module, with modules often including an inbuilt filtering capacitor and pull-up resistor.

Commonly used in projects requiring environmental monitoring, the DHT11 is easy to interface with development boards like Arduino using readily available libraries. Its specifications make it a suitable choice for applications needing to measure temperature and humidity within its defined ranges.