{"product_id":"flysky-fgr4s-v2-2-4ghz-4ch-afhds3-rc-receiver","title":"Flysky FGr4S V2 2.4GHz 4CH AFHDS 3 RC Receiver","description":"\u003c!-- SOP:v1.7 | 2026-09-04 | executor:Sidekick --\u003e\n\u003ch2 id=\"overview\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFlysky FGr4S V2\u003c\/strong\u003e is a compact 4-channel receiver built on the \u003cstrong\u003eAFHDS 3 (3rd Generation Automatic Frequency Hopping Digital System)\u003c\/strong\u003e. Featuring a built-in single antenna and bidirectional transmission, it delivers reliable 2.4GHz communication for RC cars and boats. Output options include \u003cstrong\u003ePWM, PPM, i-BUS, and S.BUS\u003c\/strong\u003e, making it broadly compatible with a wide range of setups.\u003c\/p\u003e\n\u003cdiv id=\"toc\" style=\"background: #f5f8fc; border: 1px solid #dde4ed; border-radius: 8px; padding: 16px 20px; margin: 20px 0;\"\u003e\n\u003cp style=\"font-weight: bold; font-size: 15px; margin: 0 0 10px; color: #1a2b3c;\"\u003e📋 Contents\u003c\/p\u003e\n\u003col style=\"margin: 0; padding-left: 20px; line-height: 1.9; color: #1a2b3c;\"\u003e\n\u003cli\u003e\u003ca href=\"#key-features\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eKey Features\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifications\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#overview-image\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eReceiver Overview\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#binding\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eBinding Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#forced-update\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eForced Firmware Update\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#failsafe\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eFailsafe\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#compatibility\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eTransmitter Compatibility\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#safety-notice\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eSafety \u0026amp; Installation Notes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#review-video\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eReview Video\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#related-reading\" style=\"color: #1a2b3c; text-decoration: none;\"\u003eRelated Reading\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003ch2 id=\"key-features\" style=\"scroll-margin-top: 100px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAFHDS 3 Protocol\u003c\/strong\u003e — latest-gen Flysky 2.4GHz system with excellent anti-interference performance\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e4 Channels\u003c\/strong\u003e — supports Car and Boat model types\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eMultiple Output Modes\u003c\/strong\u003e — PWM \/ PPM \/ i-BUS \/ S.BUS selectable\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eBuilt-in Single Antenna\u003c\/strong\u003e — ultra-compact design (25.5 × 22 × 17.3 mm, 5.1g)\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWide Input Voltage\u003c\/strong\u003e — 3.5V ~ 8.4V\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eOnline Firmware Update\u003c\/strong\u003e — stay up to date via transmitter\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFailsafe Protection\u003c\/strong\u003e — configurable out-of-control protection\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eRSSI Supported\u003c\/strong\u003e — real-time signal strength monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"specifications\" style=\"scroll-margin-top: 100px;\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eFGr4S V2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRF Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRF Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eAFHDS 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTransmission Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u0026lt;20dBm (EU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eData Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003ePWM \/ PPM \/ i-BUS \/ S.BUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eBuilt-in Single Antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3.5V ~ 8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eControl Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u0026gt;200m (ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25.5 × 22 × 17.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5.1g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e-10°C ~ +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e20% ~ 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCE \/ FCC (ID: N4ZFGRS400) \/ MIC \/ RCM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOnline Update\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"overview-image\" style=\"scroll-margin-top: 100px;\"\u003eReceiver Overview\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0742\/4013\/1357\/files\/FGr4S_Overview.png?v=1788334706\" alt=\"Flysky FGr4S V2 AFHDS 3 Receiver Overview | SoarSky\" style=\"max-width: 100%; width: 100%; border-radius: 8px;\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; color: #666666; font-size: 13px; margin-top: -6px;\"\u003e\u003cem\u003eFlysky FGr4S V2 — port layout and physical dimensions\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"binding\" style=\"scroll-margin-top: 100px;\"\u003eBinding Guide\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0742\/4013\/1357\/files\/FGR4S_Bind.png?v=1788334973\" alt=\"Flysky FGr4S V2 Binding Procedure Diagram | SoarSky\" style=\"max-width: 100%; width: 100%; border-radius: 8px;\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; color: #666666; font-size: 13px; margin-top: -6px;\"\u003e\u003cem\u003eFGr4S V2 — binding procedure diagram\u003c\/em\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eInsert the \u003cstrong\u003ebind cable\u003c\/strong\u003e into the receiver's BIND port.\u003c\/li\u003e\n\u003cli\u003ePlug the power cable into any other port — the LED will flash quickly, indicating bind mode.\u003c\/li\u003e\n\u003cli\u003ePut the transmitter into bind mode (refer to your transmitter's manual).\u003c\/li\u003e\n\u003cli\u003eBinding is successful when the receiver's LED flashes slowly. Remove the bind and power cables.\u003c\/li\u003e\n\u003cli\u003eReconnect the power cable to the receiver.\u003c\/li\u003e\n\u003cli\u003eVerify transmitter and receiver are operating correctly. Repeat if needed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"forced-update\" style=\"scroll-margin-top: 100px;\"\u003eForced Firmware Update\u003c\/h2\u003e\n\u003cp\u003eIf the transmitter firmware was updated and the receiver code no longer matches:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShort-circuit the BIND pin and its adjacent signal pin with the bind cable.\u003c\/li\u003e\n\u003cli\u003ePower on the receiver — it enters update mode (LED: 3 flashes + 1 off). Remove the bind cable.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eForced Update\u003c\/strong\u003e on the transmitter.\u003c\/li\u003e\n\u003cli\u003eUpdate is complete when the LED changes from 3-flash pattern to slow flash.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"failsafe\" style=\"scroll-margin-top: 100px;\"\u003eFailsafe\u003c\/h2\u003e\n\u003cp\u003eFailsafe outputs a preset channel value when the receiver loses signal, protecting the model and bystanders.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIf \u003cstrong\u003eno failsafe\u003c\/strong\u003e is configured on the transmitter: PWM\/PPM\/i-BUS output stops; S.BUS holds the last value.\u003c\/li\u003e\n\u003cli\u003eIf \u003cstrong\u003efailsafe is configured\u003c\/strong\u003e: channels output according to the transmitter's preset values.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"compatibility\" style=\"scroll-margin-top: 100px;\"\u003eTransmitter Compatibility\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0742\/4013\/1357\/files\/Bind_Table.png?v=1788335231\" alt=\"Flysky FGr4S V2 Transmitter Compatibility Table | SoarSky\" style=\"max-width: 100%; width: 100%; border-radius: 8px;\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; color: #666666; font-size: 13px; margin-top: -6px;\"\u003e\u003cem\u003eFGr4S V2 — compatible transmitter reference table\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eCompatible with \u003cstrong\u003eAFHDS 3\u003c\/strong\u003e transmitters including: Flysky NB4+ \/ NB4 Pro+ \/ PL18 Ultra \/ PA01 and others.\u003c\/p\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"safety-notice\" style=\"scroll-margin-top: 100px;\"\u003eSafety \u0026amp; Installation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the product is installed and calibrated correctly before use — incorrect installation may cause serious injury.\u003c\/li\u003e\n\u003cli\u003eAlways disconnect the receiver battery \u003cstrong\u003ebefore\u003c\/strong\u003e turning off the transmitter to avoid unintended operation.\u003c\/li\u003e\n\u003cli\u003eMount the receiver away from motors, ESCs, or other high-electrical-noise devices.\u003c\/li\u003e\n\u003cli\u003eDo not power on the receiver during the setup process to prevent loss of control.\u003c\/li\u003e\n\u003cli\u003eFor best signal strength, keep the antenna as far away from metal parts as possible.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"review-video\" style=\"scroll-margin-top: 100px;\"\u003eReview Video\u003c\/h2\u003e\n\u003cp\u003eWatch a real-world review of the Flysky FGr4S V2 receiver:\u003c\/p\u003e\n\u003cp style=\"text-align: center; margin: 15px 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/s2qh5dY8aEg\" title=\"Flysky FGr4S V2 AFHDS 3 Receiver Review | SoarSky\" style=\"max-width: 500px; width: 100%; aspect-ratio: 16\/9; border-radius: 8px; border: 0;\" loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center; color: #666; font-size: 13px; margin-top: -10px;\"\u003e\u003cem\u003eReal-world review: Flysky FGr4S V2 AFHDS 3 receiver in use\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: right; margin: 8px 0 24px;\"\u003e\u003ca href=\"#toc\" style=\"font-size: 13px; color: #ffbf00; text-decoration: none;\"\u003e↑ Back to Contents\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"related-reading\" style=\"scroll-margin-top: 100px;\"\u003eRelated Reading\u003c\/h2\u003e\n\u003cp\u003eChoosing the right AFHDS 3 receiver for your build? These SoarSky guides have you covered:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e📖 \u003ca href=\"https:\/\/soarskyrc.com\/blogs\/technology-sharing\/flysky-afhds3-receiver-buying-guide-2026\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFlysky AFHDS 3 Receiver Buying Guide 2026\u003c\/strong\u003e — which receiver fits your transmitter and build?\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e📖 \u003ca href=\"https:\/\/soarskyrc.com\/blogs\/technology-sharing\/the-difference-between-flysky-afhds3-receivers\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eThe Difference Between Flysky AFHDS 3 Receivers\u003c\/strong\u003e — FGr4S vs FGr4P vs FGr8 and more compared\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e📖 \u003ca href=\"https:\/\/soarskyrc.com\/blogs\/technology-sharing\/the-difference-between-flysky-fgr4b-and-fgr4d-receiver\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFlysky FGr4B vs FGr4D — What's the Difference?\u003c\/strong\u003e — dual-antenna receiver comparison guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Flysky","offers":[{"title":"Default Title","offer_id":48001218871581,"sku":"202412SID142","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0742\/4013\/1357\/files\/FGr4S_1.jpg?v=1788318176","url":"https:\/\/soarskyrc.com\/en-de\/products\/flysky-fgr4s-v2-2-4ghz-4ch-afhds3-rc-receiver","provider":"SoarSky","version":"1.0","type":"link"}