{"product_id":"xr4-gemini-xrossband-dual-band-expresslrs-receiver","title":"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver","description":"\u003cp\u003eIntroducing the XR4 XrossBand Receiver – The Pinnacle of compact Dual-Band Performance\u003c\/p\u003e\n\u003cp\u003eThe XR4 Receiver is a cutting-edge true diversity dual-band receiver featuring dual LR1121 RF transceivers, designed to leverage the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It seamlessly supports both the 2.4GHz and Sub-G 900MHz bands, and its dual T-type antennas provide superior reception sensitivity and connection stability for optimal performance.\u003c\/p\u003e\n\u003cp\u003eBuilt with two independent RF circuits, the XR4 offers versatile operation modes, allowing you to switch between Gemini single-frequency or Xrossband dual-band modes, and can be tailored to your specific needs. The integrated Wi-Fi module simplifies firmware updates and configuration via a user-friendly WebUI on your PC or mobile device.\u003c\/p\u003e\n\u003cp\u003eWith ultra-low latency and a high refresh rate, the XR4 excels in delivering a stable, rock-solid RF link, even in demanding or interference-prone environments. Its compact, lightweight design ensures reliable connectivity in critical situations where every signal matters. The XR4 offers the most secure and robust RF link available, providing unbeatable reliability even under the toughest conditions.\u003c\/p\u003e\n\u003cp\u003eFor more details and support, visit\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.expresslrs.org\/\" rel=\"noopener\" target=\"_blank\"\u003eexpresslrs.org.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/01_8fc58c98-78aa-4caa-b3a4-c455ecea4452.jpg?v=1734601010\"\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTrue Diversity \u0026amp; Dual-Band\u003c\/li\u003e\n\u003cli\u003eUnmatched reliability with ExpressLRS Gemini Xrossband\u003c\/li\u003e\n\u003cli\u003eCompatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini \u0026amp; Gemini Xrossband (Gem-X)\u003c\/li\u003e\n\u003cli\u003eESP32D4 high-performance MCU\u003c\/li\u003e\n\u003cli\u003eTwin Semtech LR1121 Transceiver\u003c\/li\u003e\n\u003cli\u003eSecondary UART port for advanced functionality\u003c\/li\u003e\n\u003cli\u003eCastled pads for easy soldering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eItem: XR4 Gemini Xrossband Dual-Band Receiver\u003c\/li\u003e\n\u003cli\u003eMCU: ESP32D4\u003c\/li\u003e\n\u003cli\u003eRF Chip: LR1121 x 2\u003c\/li\u003e\n\u003cli\u003eRF connector:  IPEX-1 X 2\u003c\/li\u003e\n\u003cli\u003eAntenna: Dual-Band T Antenna x 2 (Included)\u003c\/li\u003e\n\u003cli\u003eFrequency Range: 2.4GHz \/ Sub-G 900MHz\u003c\/li\u003e\n\u003cli\u003eTelemetry Power: 100mw\u003c\/li\u003e\n\u003cli\u003eMaximum receive refresh rate: DK500Hz \/ K1000Hz\u003c\/li\u003e\n\u003cli\u003eMinimum receiver refresh rate: 50Hz\u003c\/li\u003e\n\u003cli\u003eWorking voltage: DC 4.5 - 8.4V\u003c\/li\u003e\n\u003cli\u003eWeight: 1.7g (without antenna)\u003c\/li\u003e\n\u003cli\u003eDimension: 22mm * 18mm * 4mm\u003c\/li\u003e\n\u003cli\u003eFirmware Version: ExpressLRS v3.5.1 pre-installed\u003c\/li\u003e\n\u003cli\u003eFW Target: RadioMaster XR4 2.4\/900 Gemini RX\u003c\/li\u003e\n\u003cli\u003eBus interface 1: CRSF\u003c\/li\u003e\n\u003cli\u003eBus interface 2: UART\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/02_e1ee2800-8777-4ba5-bb95-6c05ed12bf08.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/03_81229561-bbb6-47e3-bb6f-a410944b6460.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/04_da8455ab-394b-41e9-a596-9d27cab2187a.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/05_08c01e6c-1ab9-4e42-bd57-4b5b0c96fef3.jpg?v=1734601009\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/06_c051b788-e57a-425c-97ff-e1d232c5a8ea.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/07_c0d14c70-0bb8-41c8-86af-a486f0d8f249.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/08_874dd3ec-fe0a-4949-93b2-b139b4e82bed.jpg?v=1734601010\"\u003e\u003cimg alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/XR4_Detail-Page-EN-PC_12.jpg?v=1742287392\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/lQLPJwlLFguVqsXNAj_NBACw5SG5EyLb-mcJYygkmVGSAA_1024_575.png?v=1771895614\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eGemini 2.4Ghz\u003cbr\u003eAnt 1 = 2.4Ghz\u003cbr\u003eAnt 2 = 2.4Ghz\u003c\/p\u003e\n\u003cp\u003eGemini SubG\u003cbr\u003eAnt 1 = 868\/915Mhz\u003cbr\u003eAnt 2 = 868\/915Mhz\u003c\/p\u003e\n\u003cp\u003eGemini Xrossband (Gem-X)\u003cbr\u003eAnt 1 = 868\/915Mhz\u003cbr\u003eAnt 2 = 2.4Ghz\u003c\/p\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/09_7aade421-1d49-4c58-ba78-cef2acd2d9f8.jpg?v=1734602152\" alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\"\u003e\u003c\/p\u003e\n\u003ch2\u003eDimensions\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/10_76f2994e-af97-4216-860c-0316c5d12a51_480x480.jpg?v=1734602056\" alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\"\u003e\u003c\/p\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 * XR4 Gemini Xrossband Dual-Band Receiver\u003c\/li\u003e\n\u003cli\u003e2 * Dual-Band T-Antenna\u003c\/li\u003e\n\u003cli\u003e1 * CRSF Wire\u003c\/li\u003e\n\u003cli\u003e3 * Heat-Shrinkable Tube\u003c\/li\u003e\n\u003cli\u003e1 * Manual Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/8324\/7079\/files\/11_263176d3-d873-42ad-a883-49875328e6ad.jpg?v=1734601010\" alt=\"XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/44b5d11d20914da185c49f0da7d24adc.png?v=1763103206\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eXR4 Receiver is installed with ExpressLRS as standard.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExpressLRS is an open-source, high-performance radio control link that delivers exceptional range and low-latency communication using advanced LoRa technology. It's highly customizable and perfect for RC enthusiasts looking for reliability and efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePair your ExpressLRS with Radiomaster's top-tier transmitters and receivers. Radiomaster products are designed to maximize the benefits of ExpressLRS, offering state-of-the-art performance for your RC adventures. Upgrade your RC experience with the unbeatable combination of ExpressLRS and Radiomaster—engineered for excellence and tailored for you.\u003c\/span\u003e\u003c\/p\u003e","brand":"RadioMaster","offers":[{"title":"Default Title","offer_id":48384893386966,"sku":"RMA120","price":3555.65,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0753\/files\/RMA120_1.webp?v=1782202994","url":"https:\/\/flyingrobot.co\/en-na\/products\/xr4-gemini-xrossband-dual-band-expresslrs-receiver","provider":"Flying Robot","version":"1.0","type":"link"}