{"id":6576,"date":"2026-06-18T15:23:42","date_gmt":"2026-06-18T15:23:42","guid":{"rendered":"https:\/\/materialparts.com\/dht11\/"},"modified":"2026-06-18T15:23:42","modified_gmt":"2026-06-18T15:23:42","slug":"dht11","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/dht11\/","title":{"rendered":"DHT11"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The DHT11 is a basic, low-cost digital temperature and humidity sensor. It provides calibrated digital output with 8-bit temperature resolution (0-50C, +\/-2C) and 8-bit humidity resolution (20-90% RH, +\/-5%). Communication uses a single-wire proprietary protocol. Packaged in a 4-pin through-hole module.<\/p>\n

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Temperature Range<\/td>\n0 to 50C<\/td>\n<\/tr>\n
Temperature Accuracy<\/td>\n+\/-2C<\/td>\n<\/tr>\n
Temperature Resolution<\/td>\n8-bit (1C)<\/td>\n<\/tr>\n
Humidity Range<\/td>\n20% to 90% RH<\/td>\n<\/tr>\n
Humidity Accuracy<\/td>\n+\/-5% RH<\/td>\n<\/tr>\n
Humidity Resolution<\/td>\n8-bit (1% RH)<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSingle-wire digital (proprietary)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3.3V to 5.5V<\/td>\n<\/tr>\n
Sampling Period<\/td>\n1 second (minimum)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0 to +50 C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • Combined temperature and humidity sensing<\/li>\n
  • Single-wire digital interface<\/li>\n
  • Calibrated digital output<\/li>\n
  • 3.3V to 5.5V supply range<\/li>\n
  • Low cost for hobbyist and educational use<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Weather stations and home automation<\/li>\n
    • HVAC monitoring<\/li>\n
    • Greenhouse environmental control<\/li>\n
    • Educational and hobbyist projects<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The DHT11 is a basic, low-cost digital temperature and humidity sensor. It provides calibrated digital output with 8-bit temperature resolution (0-50C, +\/-2C) and 8-bit humidity resolution (20-90% RH, +\/-5%). Communication uses a single-wire proprietary protocol. Packaged in a 4-pin through-hole module. Key Specifications Temperature Range 0 to 50C Temperature Accuracy +\/-2C Temperature Resolution […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,42],"tags":[],"chip_brand":[144],"class_list":["post-6576","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","chip_brand-on"],"acf":{"brief_explanation":"Digital temperature + humidity sensor, 0-50C +\/-2C, 20-90%RH +\/-5%, single-wire","date_code":"","package_case":"4-pin through-hole (blue body)","in_stock":12027,"datasheet":"https:\/\/www.mouser.com\/datasheet\/2\/758\/DHT11-Technical-Data-Sheet-Translated-Version-1143054.pdf","price":"$1.50 @ 1ku","product_introduction":"The DHT11 is a basic, ultra-low-cost digital temperature and humidity sensor. Inside the sensor, a resistive humidity sensing element and a negative temperature coefficient (NTC) thermistor are paired with an 8-bit microcontroller that provides calibrated digital output via a single-wire bidirectional protocol. The 8-bit resolution gives 1C temperature steps and 1% RH humidity steps, adequate for basic environmental monitoring. The sensor requires a minimum 1-second interval between readings. Its extremely low cost makes it one of the most popular sensors in Arduino and Raspberry Pi projects, though it is not suitable for precision measurement applications.","working_principle":"The DHT11 combines a humidity-dependent resistive element and an NTC thermistor on a single substrate with a built-in 8-bit MCU. The MCU reads the analog sensors, digitizes the data, and stores calibrated 8-bit values for temperature and humidity. Communication uses a single-wire protocol: the host pulls the data line low for at least 18ms to start a conversion, then releases it. The DHT11 responds by pulling the line low for 80us, then high for 80us, followed by 40 bits of data (8-bit humidity integer + 8-bit humidity decimal + 8-bit temperature integer + 8-bit temperature decimal + 8-bit checksum). Each bit is encoded by the duration of the high pulse: 26-28us for 0, approximately 70us for 1.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power supply (3.3-5.5V)<\/td><\/tr>
      2<\/td>DATA<\/td>Single-wire data I\/O (pull-up resistor required)<\/td><\/tr>
      3<\/td>NC<\/td>Not connected<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td><\/tr><\/table>","application_scenarios":"
      • Home weather stations and indoor climate monitoring with +\/-2C temperature accuracy<\/li>
      • HVAC humidity and temperature monitoring for basic environmental control<\/li>
      • Greenhouse automation with combined temperature and humidity in a single sensor<\/li>
      • Educational Arduino\/Raspberry Pi projects requiring low-cost environmental sensing<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        DHT22<\/td>Aosong<\/td>-40~80C, +\/-0.5C, 0-100%RH, higher accuracy<\/td><\/tr>
        SHT31-D<\/td>Sensirion<\/td>I2C, +\/-0.3C, +\/-2%RH, precision<\/td><\/tr>
        BME280<\/td>Bosch<\/td>I2C\/SPI, temp+humidity+pressure<\/td><\/tr>
        Si7021<\/td>Silicon Labs<\/td>I2C, +\/-0.4C, +\/-3%RH, low power<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6576"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6576\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6576"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6576"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}