{"id":5544,"date":"2026-06-11T02:51:43","date_gmt":"2026-06-11T02:51:43","guid":{"rendered":"https:\/\/materialparts.com\/rn42-i-rm\/"},"modified":"2026-06-11T02:51:43","modified_gmt":"2026-06-11T02:51:43","slug":"rn42-i-rm","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/rn42-i-rm\/","title":{"rendered":"RN42-I\/RM"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The RN42-I\/RM from Microchip is a Class 2 Bluetooth 2.1+EDR module with 20m range. Features SPP and HID profiles, simple UART interface, integrated antenna, and complete Bluetooth stack for easy wireless integration.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Bluetooth<\/td>\n2.1+EDR Class 2<\/td>\n<\/tr>\n
Range<\/td>\nUp to 20m<\/td>\n<\/tr>\n
Interface<\/td>\nUART 921.6kbps<\/td>\n<\/tr>\n
Profiles<\/td>\nSPP, HID<\/td>\n<\/tr>\n
Supply<\/td>\n3.3V<\/td>\n<\/tr>\n
TX Power<\/td>\n+4dBm<\/td>\n<\/tr>\n
Temp<\/td>\n-40~85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Class 2 Bluetooth 20m range<\/li>\n
  • Complete embedded stack<\/li>\n
  • Integrated chip antenna<\/li>\n
  • FCC\/CE\/IC certified<\/li>\n
  • Low power modes<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Wireless serial cable replacement<\/li>\n
    • Medical device connectivity<\/li>\n
    • Industrial data logging<\/li>\n
    • HID devices (keyboard, mouse)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The RN42-I\/RM from Microchip is a Class 2 Bluetooth 2.1+EDR module with 20m range. Features SPP and HID profiles, simple UART interface, integrated antenna, and complete Bluetooth stack for easy wireless integration. Key Specifications Bluetooth 2.1+EDR Class 2 Range Up to 20m Interface UART 921.6kbps Profiles SPP, HID Supply 3.3V TX Power +4dBm […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[134],"class_list":["post-5544","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-microchip"],"acf":{"brief_explanation":"Bluetooth 2.1+EDR Class 2 module, 20m range, SPP\/HID, UART interface","date_code":"","package_case":"Module (13.1x25.7x2.2mm)","in_stock":14066,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/RN42","price":"$9.50 @ 1ku","product_introduction":"The RN42-I\/RM from Microchip is a Class 2 Bluetooth 2.1+EDR module with 20m range. Features SPP and HID profiles, simple UART interface, integrated antenna, and complete Bluetooth stack for easy wireless integration.","working_principle":"Complete Bluetooth stack runs internally. Host communicates via UART AT commands. Module manages discovery, pairing, and link maintenance autonomously.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      5<\/td>TX<\/td>UART TX<\/td><\/tr>
      6<\/td>RX<\/td>UART RX<\/td><\/tr>
      7<\/td>VDD<\/td>3.3V<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td><\/tr><\/table>","application_scenarios":"
    • Wireless serial cable replacement<\/li>
    • Medical device connectivity<\/li>
    • Industrial data logging<\/li>
    • HID devices (keyboard, mouse)<\/li>","alternative_models":"
      Model<\/th>Brand<\/th>Diff<\/th><\/tr>
      RN42-I\/RM630<\/td>Microchip<\/td>Class 1 300m<\/td><\/tr>
      RN4677<\/td>Microchip<\/td>BT4.2 dual mode<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5544"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5544\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5544"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}