In the world of automation and IoT (Internet of Things), sensors and relay modules are essential components that help in monitoring and controlling various devices. One such combination, the DHT11 Sensor Relay Module, offers a simple yet effective solution for managing temperature and humidity in different environments. By integrating the DHT11 sensor with a relay module, this system provides a way to monitor environmental conditions and control devices based on real-time data, making it useful for home automation, climate control systems, and more.
What is the DHT11 Sensor? The DHT11 is a widely used digital sensor that measures the temperature and humidity levels of the surrounding air. It has an in-built capacitive humidity sensor and a thermistor to measure temperature. The DHT11 sensor is relatively inexpensive and easy to use, making it ideal for hobbyists, students, and those just starting out in the world of automation. The DHT11 sensor has the following specifications： Temperature range： 0-50°C Humidity range： 20%-80% RH (Relative Humidity) Accuracy： ±2°C for temperature and ±5% RH for humidity Output： The sensor outputs a digital signal, which can be read by a microcontroller (like Arduino or Raspberry Pi), making it convenient to integrate into various projects.
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