The DHT11 is a digital temperature and humidity sensor. DHT11 sensor has a built-in NTC thermistor to measure humidity and a capacitive humidity sensor to measure temperature.

Digital temperature and humidity sensor DHT11 is a low-cost, easy-to-use sensor that is commonly used in a variety of applications. DHT11 sensor has a single data pin that is used to communicate with the host microcontroller. The sensor uses a one-wire protocol, which makes it easy to interface with the microcontroller. DHT11 sensor can be read by the microcontroller using a simple polling method.

The DHT11 sensor has a temperature range of 0°C to 50°C and a humidity range of 20% to 90%. The sensor has an accuracy of ±2°C and ±5%RH. The DHT11 sensor is a reliable and accurate sensor that is a good choice for many applications.

It is important to note that the DHT11 not designed to be powered by a higher voltage than 5.5V, as this could damage the sensor. The DHT11 is a digital temperature and humidity sensor that can  power by a voltage range of 3.3V to 5.5V. The recommended input voltage for the DHT11 is 5V.

The DHT11 has a maximum current draw of 2.5mA, which is relatively low. This means that the DHT11 can power by a small battery or a USB power supply. The DHT11 has a data pin that used to communicate with the host microcontroller. The data pin pulled up to 5V by a 10K resistor. This means that the microcontroller can read the data from the DHT11 without having to provide any additional power to the sensor.