{"product_id":"am2301-temperature-humidity-sensor-dht21","title":"AM2301 Digital Temperature \u0026 Humidity Sensor DHT21","description":"\u003cp\u003eThe \u003cstrong\u003eAM2301 Digital \u003ca href=\"\/collections\/temp-humidity-modules\" title=\"Shop Temp \u0026amp; Humidity Modules at Chip.pk\"\u003eTemperature \u0026amp; Humidity Sensor\u003c\/a\u003e DHT21\u003c\/strong\u003e is a calibrated wired sensor for measuring ambient temperature and relative humidity. It features an \u003cstrong\u003eapproximately 25cm 3-wire cable\u003c\/strong\u003e with VDD, DATA and GND connections and provides digital output for compatible \u003ca href=\"\/collections\/arduino-broards\" title=\"Shop Arduino Boards at Chip.pk\"\u003eArduino\u003c\/a\u003e, \u003ca href=\"\/collections\/esp32-esp8266-boards\" title=\"Shop ESP32 \u0026amp; ESP8266 Development Boards at Chip.pk\"\u003eESP32\u003c\/a\u003e, \u003ca href=\"\/collections\/stm32-development-boards\" title=\"Shop STM32 Development Boards at Chip.pk\"\u003eSTM32\u003c\/a\u003e, IoT, environmental monitoring and automation projects.\u003c\/p\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM2301 Digital Temperature \u0026amp; Humidity Sensor\u003c\/strong\u003e, commonly associated with the \u003cstrong\u003eDHT21\u003c\/strong\u003e designation, combines temperature and relative-humidity measurement in a compact enclosed wired sensor.\u003c\/p\u003e\n\u003cp\u003eUnlike a bare PCB sensor module, this version features an \u003cstrong\u003eapproximately 25cm cable with three external wires\u003c\/strong\u003e, allowing the sensing body to be positioned away from the main microcontroller or control PCB.\u003c\/p\u003e\n\u003cp\u003eThe AM2301 integrates temperature and humidity sensing with internal signal processing and provides calibrated measurement data through a \u003cstrong\u003edigital single-bus interface\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts combination of digital output, wired construction and dual environmental measurement makes it useful for \u003cstrong\u003eweather stations, environmental monitoring, greenhouse systems, IoT devices, smart-home projects, data logging and automation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTemperature \u0026amp; Humidity Measurement\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 measures two important environmental parameters:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufacturer documentation specifies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°C to +80°C\u003cbr\u003e\u003cstrong\u003eHumidity Range:\u003c\/strong\u003e 0–99.9% RH\u003cbr\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e 0.1°C \/ 0.1% RH\u003c\/p\u003e\n\u003cp\u003eThis broad measurement capability makes the AM2301 suitable for many indoor and appropriately protected environmental-monitoring applications.\u003c\/p\u003e\n\u003ch3\u003eDigital Single-Bus Interface\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 provides measurement data through a \u003cstrong\u003edigital single-bus interface\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eInstead of providing separate analog outputs for temperature and humidity, the sensor transmits digital measurement data to a compatible microcontroller.\u003c\/p\u003e\n\u003cp\u003eThis simplifies integration into embedded systems and allows both environmental measurements to be obtained through one DATA connection.\u003c\/p\u003e\n\u003ch3\u003e25cm Wired Sensor Design\u003c\/h3\u003e\n\u003cp\u003eThis Chip.pk variant features an \u003cstrong\u003eapproximately 25cm cable\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe cable allows the sensing body to be placed separately from the main controller board, which can be useful when the measurement location and electronics location are different.\u003c\/p\u003e\n\u003cp\u003eTypical examples include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eElectronics enclosures\u003c\/li\u003e\n\u003cli\u003eIndoor environmental monitoring\u003c\/li\u003e\n\u003cli\u003eGreenhouse monitoring\u003c\/li\u003e\n\u003cli\u003eWeather stations\u003c\/li\u003e\n\u003cli\u003eIoT sensor nodes\u003c\/li\u003e\n\u003cli\u003eAutomation systems\u003c\/li\u003e\n\u003cli\u003eStorage-area monitoring\u003c\/li\u003e\n\u003cli\u003eData logging systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3-Wire Connection\u003c\/h3\u003e\n\u003cp\u003eThe actual connection diagram for this product shows three external wires:\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eWire Color\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eConnection\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVDD\u003c\/td\u003e\n\u003ctd\u003ePositive Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYellow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSDA \/ DATA\u003c\/td\u003e\n\u003ctd\u003eDigital Data Signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlack\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eTherefore:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRed → VDD\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eYellow → DATA\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBlack → GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor package also identifies an internal \u003cstrong\u003eNC (Not Connected)\u003c\/strong\u003e position, but it is not used as one of the three external wired connections.\u003c\/p\u003e\n\u003ch3\u003eImportant Connection Note\u003c\/h3\u003e\n\u003cp\u003eAlways verify the wire colors on the actual sensor before applying power. Reversing VDD and GND may damage the sensor.\u003c\/p\u003e\n\u003ch3\u003eArduino Connection\u003c\/h3\u003e\n\u003cp\u003eFor a typical compatible Arduino setup:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRed (VDD) → 5V\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eYellow (DATA) → Digital GPIO\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBlack (GND) → GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor example:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAM2301 Red → Arduino 5V\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eAM2301 Yellow → Arduino D2\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eAM2301 Black → Arduino GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003eD2\u003c\/code\u003e is only an example. A different suitable digital pin can be used when the software is configured accordingly.\u003c\/p\u003e\n\u003ch3\u003eESP32 Connection\u003c\/h3\u003e\n\u003cp\u003eFor a typical compatible ESP32 project:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRed (VDD) → 3.3V\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eYellow (DATA) → Suitable GPIO\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBlack (GND) → GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe selected GPIO must also be correctly defined in the software.\u003c\/p\u003e\n\u003cp\u003eThis enables projects such as:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAM2301 → ESP32 → Wi-Fi → Dashboard \/ Server \/ Cloud\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003efor remote environmental monitoring and IoT applications.\u003c\/p\u003e\n\u003ch3\u003eMicrocontroller Compatibility\u003c\/h3\u003e\n\u003cp\u003eWith appropriate electrical connections and software support, the AM2301 can be integrated with platforms such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eArduino-compatible boards\u003c\/li\u003e\n\u003cli\u003eESP32\u003c\/li\u003e\n\u003cli\u003eESP8266\u003c\/li\u003e\n\u003cli\u003eSTM32\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi GPIO projects\u003c\/li\u003e\n\u003cli\u003eOther compatible microcontrollers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ccode\u003eArduino\u003c\/code\u003e should remain a \u003cstrong\u003ecompatibility\/application keyword\u003c\/strong\u003e, not part of the product H1, because the AM2301 is not exclusively an Arduino sensor.\u003c\/p\u003e\n\u003ch3\u003eAM2301 \/ DHT21\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM2301\u003c\/strong\u003e is commonly associated with the \u003cstrong\u003eDHT21\u003c\/strong\u003e designation.\u003c\/p\u003e\n\u003ch3\u003eArduino Projects\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 can be used in suitable Arduino projects such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature monitors\u003c\/li\u003e\n\u003cli\u003eHumidity monitors\u003c\/li\u003e\n\u003cli\u003eDigital thermometers\/hygrometers\u003c\/li\u003e\n\u003cli\u003eWeather stations\u003c\/li\u003e\n\u003cli\u003eGreenhouse monitoring\u003c\/li\u003e\n\u003cli\u003eRoom climate monitoring\u003c\/li\u003e\n\u003cli\u003eData loggers\u003c\/li\u003e\n\u003cli\u003eHome automation\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA compatible library\/software implementation and correct wiring are required.\u003c\/p\u003e\n\u003ch3\u003eESP32 \u0026amp; IoT Applications\u003c\/h3\u003e\n\u003cp\u003eThe sensor is also useful for ESP32 and ESP8266-based IoT projects.\u003c\/p\u003e\n\u003cp\u003eTemperature and humidity measurements can be collected by the controller and then used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeb dashboards\u003c\/li\u003e\n\u003cli\u003eRemote monitoring\u003c\/li\u003e\n\u003cli\u003eData logging\u003c\/li\u003e\n\u003cli\u003eSmart-home automation\u003c\/li\u003e\n\u003cli\u003eEnvironmental alerts\u003c\/li\u003e\n\u003cli\u003eCloud-connected IoT projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes the AM2301 useful beyond simple standalone Arduino projects.\u003c\/p\u003e\n\u003ch3\u003eEnvironmental Monitoring\u003c\/h3\u003e\n\u003cp\u003eBecause the AM2301 measures both temperature and relative humidity, it is useful in applications including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndoor climate monitoring\u003c\/li\u003e\n\u003cli\u003eWeather stations\u003c\/li\u003e\n\u003cli\u003eGreenhouses\u003c\/li\u003e\n\u003cli\u003eHome automation\u003c\/li\u003e\n\u003cli\u003eIoT environmental monitoring\u003c\/li\u003e\n\u003cli\u003eElectronics cabinet monitoring\u003c\/li\u003e\n\u003cli\u003eHVAC monitoring prototypes\u003c\/li\u003e\n\u003cli\u003eStorage monitoring\u003c\/li\u003e\n\u003cli\u003eLaboratory projects\u003c\/li\u003e\n\u003cli\u003eEnvironmental data logging\u003c\/li\u003e\n\u003cli\u003eSmart monitoring systems\u003c\/li\u003e\n\u003cli\u003eEducational electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor outdoor, condensation-prone, industrial or safety-critical applications, installation conditions and sensor limitations should be evaluated separately.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAM2301 digital temperature and humidity sensor\u003c\/li\u003e\n\u003cli\u003eCommonly associated with DHT21\u003c\/li\u003e\n\u003cli\u003eTemperature and relative-humidity measurement\u003c\/li\u003e\n\u003cli\u003eDigital single-bus communication\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eApprox. 25cm cable length\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3-wire external connection\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eRed wire for VDD\u003c\/li\u003e\n\u003cli\u003eYellow wire for DATA\u003c\/li\u003e\n\u003cli\u003eBlack wire for GND\u003c\/li\u003e\n\u003cli\u003eEnclosed wired sensor design\u003c\/li\u003e\n\u003cli\u003eCalibrated digital measurement\u003c\/li\u003e\n\u003cli\u003e0.1°C \/ 0.1% RH resolution\u003c\/li\u003e\n\u003cli\u003eWide temperature measurement range\u003c\/li\u003e\n\u003cli\u003eWide humidity measurement range\u003c\/li\u003e\n\u003cli\u003eSuitable for compatible Arduino projects\u003c\/li\u003e\n\u003cli\u003eESP32 and ESP8266 integration\u003c\/li\u003e\n\u003cli\u003eSTM32 integration\u003c\/li\u003e\n\u003cli\u003eIoT environmental monitoring\u003c\/li\u003e\n\u003cli\u003eWeather station applications\u003c\/li\u003e\n\u003cli\u003eGreenhouse monitoring\u003c\/li\u003e\n\u003cli\u003eAutomation and data logging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eAM2301 Temperature \u0026amp; Humidity Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlternate Designation\u003c\/td\u003e\n\u003ctd\u003eDHT21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eDigital Temperature \u0026amp; Humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eWired \/ Enclosed Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eApprox. 25cm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Wires\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eDigital Single-Bus\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\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e0–99.9% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Connection\u003c\/td\u003e\n\u003ctd\u003eVDD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Connection\u003c\/td\u003e\n\u003ctd\u003eSDA \/ DATA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround Connection\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVDD Wire\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDATA Wire\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND Wire\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Sensing\u003c\/td\u003e\n\u003ctd\u003eCapacitive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Application\u003c\/td\u003e\n\u003ctd\u003eEnvironmental Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eQuick Connection Table\u003c\/h3\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eAM2301\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eWire\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eController\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVDD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDATA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003ctd\u003eDigital GPIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThis table is worth keeping in the Shopify description because customers can immediately identify the three connections.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose the AM2301?\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 combines:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature sensing + Humidity sensing + Digital output + 25cm wired installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ein one compact sensor.\u003c\/p\u003e\n\u003cp\u003eThe wired design is especially convenient when the sensing location needs to be separated from the main controller board.\u003c\/p\u003e\n\u003cp\u003eFor example, a controller can remain inside an electronics enclosure while the AM2301 sensing body is positioned closer to the area being monitored.\u003c\/p\u003e\n\u003ch3\u003eAM2301 vs DHT11\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 provides a broader temperature and humidity measurement capability than basic DHT11-class sensors.\u003c\/p\u003e\n\u003cp\u003eA DHT11 may still be sufficient for inexpensive beginner applications, while the AM2301 is better suited when a project requires a broader measurement range and a wired sensor format.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature monitoring\u003c\/li\u003e\n\u003cli\u003eHumidity monitoring\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring\u003c\/li\u003e\n\u003cli\u003eWeather stations\u003c\/li\u003e\n\u003cli\u003eGreenhouse monitoring\u003c\/li\u003e\n\u003cli\u003eHome automation\u003c\/li\u003e\n\u003cli\u003eIoT projects\u003c\/li\u003e\n\u003cli\u003eArduino projects\u003c\/li\u003e\n\u003cli\u003eESP32 projects\u003c\/li\u003e\n\u003cli\u003eESP8266 projects\u003c\/li\u003e\n\u003cli\u003eSTM32 projects\u003c\/li\u003e\n\u003cli\u003eData logging\u003c\/li\u003e\n\u003cli\u003eSmart monitoring\u003c\/li\u003e\n\u003cli\u003eElectronics enclosure monitoring\u003c\/li\u003e\n\u003cli\u003eEducational electronics\u003c\/li\u003e\n\u003cli\u003eEmbedded systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStudents \u0026amp; Beginners\u003c\/strong\u003e — learning digital environmental sensing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eArduino Users\u003c\/strong\u003e — building temperature and humidity monitoring systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eESP32 \/ IoT Developers\u003c\/strong\u003e — creating connected environmental sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMakers\u003c\/strong\u003e — weather stations, greenhouse and smart-home projects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngineers\u003c\/strong\u003e — prototyping environmental monitoring and automation systems.\u003c\/p\u003e\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 × AM2301 Digital Temperature \u0026amp; Humidity Sensor DHT21 with approx. 25cm cable\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eAM2301 Sensor in Pakistan\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM2301 Digital Temperature \u0026amp; Humidity Sensor DHT21\u003c\/strong\u003e provides a convenient wired solution for temperature and relative-humidity measurement. Its approximately \u003cstrong\u003e25cm 3-wire cable\u003c\/strong\u003e makes it suitable for Arduino, ESP32, IoT, weather monitoring, greenhouse and automation projects.\u003c\/p\u003e\n\u003cp\u003eCheck Chip.pk for the latest \u003cstrong\u003eAM2301 sensor price in Pakistan\u003c\/strong\u003e and current stock availability.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003ch3\u003e1. What is the AM2301 sensor?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM2301\u003c\/strong\u003e is a digital temperature and relative-humidity sensor, commonly associated with the \u003cstrong\u003eDHT21\u003c\/strong\u003e designation. It provides calibrated digital measurements through a single-bus interface.\u003c\/p\u003e\n\u003ch3\u003e2. What does the AM2301 measure?\u003c\/h3\u003e\n\u003cp\u003eIt measures two environmental parameters:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e and \u003cstrong\u003eRelative Humidity (RH)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e3. What is the temperature range of AM2301?\u003c\/h3\u003e\n\u003cp\u003eThe AM2301 has a specified temperature measurement range of approximately \u003cstrong\u003e-40°C to +80°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e4. What is the humidity range of AM2301?\u003c\/h3\u003e\n\u003cp\u003eThe specified humidity measurement range is \u003cstrong\u003e0–99.9% RH\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e5. What is the resolution of the AM2301?\u003c\/h3\u003e\n\u003cp\u003eThe sensor provides \u003cstrong\u003e0.1°C temperature resolution\u003c\/strong\u003e and \u003cstrong\u003e0.1% RH humidity resolution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e6. How long is the cable on this AM2301 sensor?\u003c\/h3\u003e\n\u003cp\u003eThe Chip.pk variant has an \u003cstrong\u003eapproximately 25cm cable\u003c\/strong\u003e with three external wires.\u003c\/p\u003e\n\u003ch3\u003e7. What are the AM2301 wire connections?\u003c\/h3\u003e\n\u003cp\u003eFor the product configuration you provided:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRed → VDD \/ Power\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eYellow → DATA\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBlack → GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sensor diagram also shows an internal \u003cstrong\u003eNC (Not Connected)\u003c\/strong\u003e connection, which is not used as one of the three external wires.\u003c\/p\u003e\n\u003ch3\u003e8. Can AM2301 be used with Arduino?\u003c\/h3\u003e\n\u003cp\u003eYes. The AM2301 can be interfaced with compatible Arduino boards using a digital GPIO and suitable software\/library support.\u003c\/p\u003e\n\u003ch3\u003e9. How do I connect AM2301 to Arduino?\u003c\/h3\u003e\n\u003cp\u003eA typical connection is:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRed → 5V\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eYellow → Digital GPIO, such as D2\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBlack → GND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eD2 is only an example; another suitable digital GPIO can be selected in the software.\u003c\/p\u003e\n\u003ch3\u003e10. Can AM2301 be used with ESP32?\u003c\/h3\u003e\n\u003cp\u003eYes. It can be integrated with an ESP32 for IoT and wireless environmental-monitoring projects using an appropriate GPIO, power connection and compatible software implementation.\u003c\/p\u003e\n\u003ch3\u003e11. Is AM2301 the same as DHT21?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAM2301 is commonly identified\/marketed as DHT21\u003c\/strong\u003e, so DHT21 is useful secondary terminology for this product.\u003c\/p\u003e\n\u003ch3\u003e12. Is AM2301 the same as DHT22?\u003c\/h3\u003e\n\u003cp\u003eNo. \u003cstrong\u003eAM2301\/DHT21\u003c\/strong\u003e should not be confused with \u003cstrong\u003eAM2302\/DHT22\u003c\/strong\u003e. They should be treated as separate product designations.\u003c\/p\u003e\n\u003ch3\u003e13. Can AM2301 be used for a weather station?\u003c\/h3\u003e\n\u003cp\u003eYes. Measuring both temperature and relative humidity makes it suitable for \u003cstrong\u003eweather station and environmental-monitoring projects\u003c\/strong\u003e, provided the installation protects the sensor appropriately for the intended environment.\u003c\/p\u003e\n\u003ch3\u003e14. Is AM2301 suitable for greenhouse monitoring?\u003c\/h3\u003e\n\u003cp\u003eYes. It can be used to monitor temperature and humidity in greenhouse projects when installed within its environmental and electrical operating requirements.\u003c\/p\u003e\n\u003ch3\u003e15. Can AM2301 be used for IoT projects?\u003c\/h3\u003e\n\u003cp\u003eYes. It can be connected to compatible controllers such as ESP32 or ESP8266 to collect temperature and humidity data for dashboards, data logging, alerts or remote monitoring.\u003c\/p\u003e\n\u003ch3\u003e16. Does AM2301 provide analog output?\u003c\/h3\u003e\n\u003cp\u003eNo. The AM2301 provides \u003cstrong\u003edigital measurement data\u003c\/strong\u003e rather than a conventional analog temperature\/humidity output.\u003c\/p\u003e\n\u003ch3\u003e17. What is the price of AM2301 in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM2301 sensor price in Pakistan\u003c\/strong\u003e can vary according to stock and market conditions. Check the current Chip.pk product price for the latest information.\u003c\/p\u003e\n\u003ch3\u003e18. Where can I buy AM2301 DHT21 in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eYou can buy the \u003cstrong\u003eAM2301 Digital Temperature \u0026amp; Humidity Sensor DHT21\u003c\/strong\u003e from Chip.pk, subject to current stock availability.\u003c\/p\u003e","brand":"Chip.pk","offers":[{"title":"Default Title","offer_id":52826667090205,"sku":null,"price":1300.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/1060\/7389\/files\/am2301-ff.png?v=1787867225","url":"https:\/\/www.chip.pk\/products\/am2301-temperature-humidity-sensor-dht21","provider":"Chip.pk","version":"1.0","type":"link"}