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The DHT21 sensor is a robust digital solution for measuring temperature and relative humidity with excellent precision. Its durable plastic casing makes it suitable for outdoor applications, outperforming other models like the DHT11 and DHT22. Easy to integrate with Arduino, Raspberry Pi, and NodeMCU, it features libraries supporting a single bus protocol for straightforward software implementation. This sensor offers reliable data every 2 seconds, ensuring consistent performance for various applications such as environmental monitoring in agriculture and HVAC control. Elevate your projects with this advanced sensor that merges technology and functionality seamlessly.

The DHT21 is a state-of-the-art sensor designed for accurately measuring both temperature and relative humidity in various environments. Built with a capacitive humidity sensor, thermistor, and an integrated microcontroller that performs analog-to-digital conversion, it guarantees impressive accuracy and stability. The robust plastic casing of the DHT21 not only enhances its longevity but also enables reliable operation in outdoor conditions, making it a superior choice compared to the DHT11 and DHT22 models. Each sensor is factory calibrated with coefficients stored in its OTP memory, ensuring precise and stable readings over time. For developers and makers, connecting the DHT21 to platforms such as Arduino, Raspberry Pi, or NodeMCU is a breeze, thanks to readily available libraries that support single bus communication protocols. To set it up, simply connect the red wire to a 3-5V power supply, the black wire to ground, and the yellow wire to a digital pin on your Arduino. It is worth noting that if multiple DHT21 sensors are to be connected to one Arduino, each sensor must use a separate data pin. The only limitation is that data can only be refreshed every 2 seconds, which ensures accuracy but requires some patience. This sensor is perfect for various applications, including automatic temperature control, air conditioning systems, and environmental monitoring in agricultural settings.

Usage ideas The DHT21 sensor can be utilized in incubators for monitoring humidity and temperature levels effectively. It's ideal for climate monitoring in greenhouses, ensuring optimal conditions for plant growth. Use it in home automation systems to control HVAC based on real-time climate data. Implement it in weather stations for accurate outdoor temperature and humidity readings. Additionally, it can be employed in laboratories needing precise environmental controls.

Frequently asked questions
Can this sensor be used to measure humidity in an incubator?: Yes, it is suitable for that purpose. Refer to the product specifications for more details.
What happens if I use a thicker wire? Do I need a resistor?: You can use a wire of the same thickness without needing a resistor. Please check the product details for further information.
What are the temperature and humidity measurement values? How accurate is it?: The sensor measures a temperature range of -40 to 80°C with an accuracy of ±0.5°C and a humidity range of 0 to 100% RH with ±3% accuracy. It provides new data every 2 seconds.

- Brand: Educabot
- Condition: New
- Model: Dht21 Am2301
- SKU: SENS-DHT21
- Operating Voltage: 3-5V
- Minimum Recommended Voltage: 3V
- Maximum Recommended Voltage: 5V
- Minimum Input Voltage Limit: 3V
- Maximum Input Voltage Limit: 5V

Vendor listing title: Sensor Dht21 Humedad Relativa Y Temperatura Am2301 Arduino