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标题: DHT11 Sensor Relay Module: A Practical Solution for Temperature and Humidity Control The DHT11 Sensor Relay Module is an essential tool for hobbyists and professionals alike who want to monitor environmental conditions and automate electrical devices. Combining a DHT11 temperature and humidity sensor with a relay module allows users to measure environmental parameters and control appliances in response to those measurements. This integration is widely used in home automation, greenhouse management, and laboratory settings. The DHT11 sensor itself is a digital temperature and humidity sensor, capable of providing real-time measurements. It measures temperature in the range of 0 to 50 degrees Celsius with an accuracy of ±2°C, and humidity from 20% to 90% relative humidity with ±5% accuracy. The sensor outputs data in a digital format through a single-wire interface, making it compatible with various microcontrollers such as Arduino, Raspberry Pi, and ESP8266. While the DHT11 is not the most precise sensor on the market, its low cost, simplicity, and reliability make it a popular choice for basic environmental monitoring projects.