{"product_id":"dht22-temperature-humidity-sensor-module-accurate-readings","title":"DHT22 Temperature Humidity Sensor Module - Accurate Readings","description":"\u003ch1\u003eDHT22 Temperature and Humidity Sensor Module\u003c\/h1\u003e\n\u003cp\u003eThe DHT22 (also known as AM2302) is a digital temperature and humidity sensor that outputs calibrated readings over a single-wire interface. It offers higher accuracy and a wider measurement range than the DHT11, making it suitable for projects that need reliable environmental monitoring.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e0 – 100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±2% RH (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSampling Rate\u003c\/td\u003e\n\u003ctd\u003e0.5 Hz (every 2 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-animated-weather-station-display\"\u003eIndoor weather station with LCD display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-greenhouse-climate-monitor-kit-with-arduino-uno-plus-sensors\"\u003eGreenhouse or terrarium climate monitor\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eHome automation thermostat and humidity logger\u003c\/li\u003e\n  \u003cli\u003eIncubator or server room environmental alarm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe DHT22 works with any microcontroller that supports digital I\/O, including Arduino Uno, Mega, Nano, ESP32, ESP8266, and Raspberry Pi. The module includes an onboard 4.7kΩ pull-up resistor, so you can connect it directly to a 3.3V or 5V logic board. Recommended libraries are the Adafruit DHT sensor library and the simple DHT22 library for Arduino.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V–5V, GND to ground, and DATA to a digital pin. The module already has a pull-up, so no external resistor is needed. Avoid cables longer than 1 metre, and never request readings faster than once every 2 seconds to get valid data.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the DHT22 works with all Arduino boards. Use the DHT sensor library by Adafruit on any digital pin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between DHT11 and DHT22?\u003c\/summary\u003e\u003cp\u003eThe DHT22 has a much wider temperature range (-40°C to 80°C vs 0–50°C) and better accuracy (±0.5°C vs ±2°C). Humidity readings are also more precise with the DHT22.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use it outdoors?\u003c\/summary\u003e\u003cp\u003eThe bare module is not weatherproof. For outdoor use, place it in a weatherproof enclosure with ventilation to protect from rain and direct moisture.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445107220845,"sku":"CDN-0364","price":100.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_8a8f19fb-5ca1-45e1-8a48-64dc12ae7cc5.jpg?v=1781513325","url":"https:\/\/compoden.com\/products\/dht22-temperature-humidity-sensor-module-accurate-readings","provider":"Compoden","version":"1.0","type":"link"}