High-Precision Digital Output: The DHT21/AM2301 sensor offers a digital signal output that ensures high precision, stability, and strong anti-interference ability, making it ideal for critical applications where accuracy is paramount. Exceptional Long-Term Stability: Utilizing advanced digital module detection and humidity sensor technology, this temperature sensor maintains excellent stability over time, ensuring consistent performance and reliability in various environmental conditions. Easy Installation and Versatile Use: This 4-pin sensor requires no additional components for installation, making it straightforward to integrate into different projects. Its extended signal transmission capability allows for flexible placement and layout adjustments according to project needs. Wide Measuring Range with High Accuracy: Capable of measuring temperatures from -40℃ to 80℃ and humidity from 0 to 100% RH, this sensor provides a temperature accuracy of ±0.5°C and humidity accuracy of ±2%RH, suitable for a wide range of environmental monitoring applications. Long Signal Transmission for Diverse Layouts: Designed to support extended signal transmission distances, this digital temperature and humidity sensor is perfect for projects that require remote sensing capabilities, ensuring reliable data collection over larger areas. Colour:black Material:plastic The actual product may have slight color difference or difference, which will not affect the use Package Contents: 2 * Digital Temperature and Humidity Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.