{"product_id":"gy-21-htu21-sensor-module","title":"GY-21 HTU21 SHT21 Digital Humidity And Temperature Sensor Module","description":"\u003cdiv class=\"product_info\"\u003e\n\u003ch2 class=\"sing--sub-heading\"\u003e\u003cspan style=\"font-size: 18.72px;\"\u003eGY-21 HTU21 SHT21 Digital Humidity And Temperature Sensor Module – digital temperature and humidity sensor\u003c\/span\u003e\u003c\/h2\u003e\nThe GY-21 HTU21 module is a compact and precise \u003cstrong\u003edigital temperature and humidity sensor\u003c\/strong\u003e designed for environmental monitoring, data logging, and IoT applications. Because it functions as both a \u003cstrong\u003etemp and humidity sensor\u003c\/strong\u003e and a fully digital interface unit, it is widely used in weather stations, smart homes, and embedded projects. Its accuracy and simplicity make it a reliable choice when selecting the \u003cstrong\u003ebest temperature sensor\u003c\/strong\u003e for small-scale or professional systems. This module operates on the I2C interface, allowing fast and stable communication with microcontrollers. With only four connection pins, including built-in 4.7k pull-ups, users can integrate the GY-21 quickly into their circuits. The HTU21\/SHT21 IC delivers high accuracy for humidity and temperature, making it a dependable \u003cstrong\u003edigital temperature and humidity sensor\u003c\/strong\u003e for continuous environmental measurement. Whether for humidity control systems or air-quality devices, it ensures consistent readings and long-term stability. \u003cbr\u003e\u003cbr\u003eFurthermore, its efficient design supports Arduino and other development boards, enabling beginners and professionals to deploy this \u003cstrong\u003etemp and humidity sensor\u003c\/strong\u003e with minimal setup. Because of its clean I2C communication protocol, the GY-21 often performs in low-power and portable sensing applications.\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eTechnical Details\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eType: Temperature \u0026amp; Humidity Sensor\u003c\/li\u003e\n\u003cli\u003eModel: Sensor\u003c\/li\u003e\n\u003cli\u003eVoltage: 2.1V ~ 3.6V\u003c\/li\u003e\n\u003cli\u003eCurrent: 0.15µA\u003c\/li\u003e\n\u003cli\u003eResolution: 0.04%RH, 0.02°C\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±2%RH, ±3°C\u003c\/li\u003e\n\u003cli\u003eSize: 13 x 10 mm\u003c\/li\u003e\n\u003cli\u003eWeight: 1g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eFeatures\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eSupply Voltage: 2.1V ~ 3.6V\u003c\/li\u003e\n\u003cli\u003eLow Power: 0.15µA (typical)\u003c\/li\u003e\n\u003cli\u003eInterface: I2C\u003c\/li\u003e\n\u003cli\u003eResolution: 0.04%RH, 0.02°C\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±2%RH, ±3°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch2 class=\"sing--sub-heading\"\u003e\u003cspan style=\"font-size: 18.72px;\"\u003eApplications :\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWeather monitoring systems requiring a stable \u003cstrong\u003edigital temperature and humidity sensor\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndustrial humidity and temperature control using a dependable \u003cstrong\u003etemp and humidity sensor\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHVAC (Heating, Ventilation, and Air Conditioning) systems for automation\u003c\/li\u003e\n\u003cli\u003eSmart home and IoT environmental monitoring\u003c\/li\u003e\n\u003cli\u003eAgricultural climate control systems \u003c\/li\u003e\n\u003cli\u003eMedical and pharmaceutical storage\u003c\/li\u003e\n\u003cli\u003eWearables and consumer electronics\u003c\/li\u003e\n\u003cli\u003eIoT-based sensor networks and embedded systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eIntegration with Arduino\u003c\/h3\u003e\n\u003cdiv id=\"p_info\" style=\"text-align: center;\"\u003e\u003cimg alt=\"GY-21 HTU21 SHT21 Digital Humidity And Temperature Sensor Module aurdino interface\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/GY21-WITH-ARDUINO.jpg?v=1646219505\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eSample Code\u003c\/h3\u003e\n\u003cscript src=\"https:\/\/gist.github.com\/labsguru\/af90d2bba748fa5593894ef8a3e7b9c1.js\"\u003e\u003c\/script\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eSize: 13 x 10 mm\u003c\/li\u003e\n\u003cli\u003eWeight (gm): 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds ls-n\"\u003e\n\u003cli\u003e1 x GY-21 HTU21 Sensor Module\u003c\/li\u003e\n\u003cli\u003e1 x 4-Pin Male Header\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"Default Title","offer_id":40708928438453,"sku":"KG592","price":155.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/gy21-htu21-digital-temperature-humidity-sensor.jpg?v=1765436992","url":"https:\/\/kitsguru.com\/de\/products\/gy-21-htu21-sensor-module","provider":"KitsGuru","version":"1.0","type":"link"}