{"product_id":"frsky-rxsr-ultra-mini-receiver","title":"FrSky RXSR Ultra Mini Receiver","description":"\u003cmeta name=\"description\" content=\"Buy FrSky RXSR Ultra Mini Receiver online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eFrSky RXSR Ultra Mini Receiver\u003c\/h1\u003e\n\n\u003cp\u003eThe FrSky RXSR Ultra Mini Receiver is a compact, high-performance radio control receiver designed for lightweight drone and RC aircraft applications requiring minimal weight and space constraints. Professional FPV pilots, racing drone enthusiasts, and RC modelers use this receiver for its exceptional signal stability and ultra-compact form factor that integrates seamlessly into size-restricted airframes. This receiver solves the critical challenge of maintaining reliable 2.4GHz ACCST signal reception while keeping total system weight under strict limits for small-scale aerial platforms.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe FrSky RXSR operates on the proven 2.4GHz ACCST protocol, delivering secure, low-latency communication between compatible FrSky transmitters and receiver-equipped aircraft. The receiver employs advanced frequency-hopping spread spectrum technology to ensure immunity from interference in congested RF environments. Its ultra-compact dimensions measuring just 23x14x7mm make it ideal for integration into micro-class drones, small FPV racing quads, and lightweight RC airplanes where every gram matters for flight performance and battery endurance.\u003c\/p\u003e\n\n\u003cp\u003eThe RXSR Ultra Mini features a robust PCB design with integrated failsafe programming capabilities, allowing pilots to configure automatic safety responses in case of signal loss. The receiver supports SBUS output protocol, enabling direct connection to modern flight controllers and ESCs without additional signal conversion hardware. Built-in telemetry support allows reverse data transmission from the aircraft back to the transmitter, providing real-time feedback on battery voltage, signal strength, and other critical flight parameters during operation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e2.4GHz ACCST Radio Control Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFrSky\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Band\u003c\/td\u003e\n\u003ctd\u003e2.4GHz ACCST Protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e23 x 14 x 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.5 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Protocol\u003c\/td\u003e\n\u003ctd\u003eSBUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.5V to 9V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-Compact Form Factor: 23x14x7mm dimensions and 1.5g weight enable integration into micro-drones and weight-critical RC applications without compromising aerodynamic performance\u003c\/li\u003e\n\u003cli\u003eSBUS Protocol Output: Direct compatibility with modern flight controllers eliminates need for PPM signal conversion, reducing component count and potential failure points\u003c\/li\u003e\n\u003cli\u003eIntegrated Failsafe Programming: Configurable automatic responses to signal loss including throttle cut, level recovery, or return-to-home sequences for enhanced flight safety\u003c\/li\u003e\n\u003cli\u003eTelemetry Capable: Bidirectional communication allows transmission of battery voltage, RSSI signal strength, and custom sensor data back to FrSky transmitters for real-time flight monitoring\u003c\/li\u003e\n\u003cli\u003e8-Channel Support: Sufficient channel capacity for complex aircraft configurations including throttle, ailerons, elevator, rudder, flaps, landing gear, and auxiliary functions\u003c\/li\u003e\n\u003cli\u003eFrequency-Hopping ACCST: Advanced spread spectrum technology provides robust interference rejection in crowded 2.4GHz environments typical of RC flying fields\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFPV Racing Drones: Lightweight receiver ideal for 250mm racing quads where minimal weight preserves acceleration, top speed, and flight time while maintaining reliable signal lock during high-speed maneuvers\u003c\/li\u003e\n\u003cli\u003eMicro FPV Platforms: Perfect for sub-250g camera drones and small FPV wings requiring regulatory compliance while maintaining professional-grade control responsiveness and telemetry feedback\u003c\/li\u003e\n\u003cli\u003eLightweight RC Airplanes: Enables control of electric gliders, park flyers, and hand-launch aircraft where receiver weight directly impacts flight duration and aerodynamic efficiency\u003c\/li\u003e\n\u003cli\u003eRC Helicopters and Multicopters: Compact size facilitates installation in confined fuselage spaces on scale helicopter models and custom multirotor platforms with specialized configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin setup by binding the RXSR receiver to your compatible FrSky transmitter using the standard binding procedure: power the receiver with the bind plug installed, then activate bind mode on your transmitter until the receiver LED confirms successful pairing. Connect the SBUS output pin to your flight controller's SBUS input port, ensuring proper voltage levels between 3.5V and 9V DC from your LiPo battery or dedicated receiver power supply. Configure failsafe settings through your flight controller's software to define desired behavior during signal loss, typically setting throttle to minimum and enabling stabilization modes for safe descent.\u003c\/p\u003e\n\n\u003cp\u003eFor telemetry operation, connect a compatible FrSky telemetry module to your transmitter and configure the receiver's telemetry output in your flight controller settings. Verify signal reception by checking the receiver LED status during preflight checks, ensuring steady illumination indicating active signal lock. Perform range tests before each flying session by walking away from the aircraft while monitoring transmitter signal strength indicators, confirming reliable control response at your intended flying distance. Always validate failsafe functionality on the ground before flight operations to ensure your configured safety responses function as intended.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the FrSky RXSR compatible with non-FrSky transmitters?\u003c\/summary\u003e\n\u003cp\u003eNo, the RXSR receiver is exclusively compatible with FrSky 2.4GHz ACCST transmitters such as the Taranis, Horus, and QX7 series. The proprietary ACCST protocol prevents binding with receivers or transmitters from other manufacturers. If you use a different brand transmitter, you will need a receiver designed for that specific protocol.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum range of the RXSR receiver?\u003c\/summary\u003e\n\u003cp\u003eThe RXSR typically achieves reliable control range of 1-2 kilometers in open space with clear line of sight, though actual range depends on antenna orientation, environmental interference, and transmitter power output. Always perform range testing specific to your flying location before flight operations, as buildings, power lines, and other RF sources can significantly reduce effective range.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use the RXSR on aircraft heavier than 250 grams?\u003c\/summary\u003e\n\u003cp\u003eYes, the RXSR receiver works on any aircraft regardless of weight, as long as your transmitter and receiver are compatible FrSky components. The weight advantage of this receiver is most beneficial for lightweight applications, but it functions equally well on larger platforms where weight is less critical.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the RXSR require a separate power supply or can it run from the flight controller?\u003c\/summary\u003e\n\u003cp\u003eThe RXSR can be powered directly from your flight controller's receiver output port if it provides 5V regulated power, or from a dedicated BEC (Battery Eliminator Circuit) set to 5V output. Ensure your power source can deliver sufficient current for the receiver and any connected telemetry modules, typically 100-200mA depending on configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy FrSky RXSR Ultra Mini Receiver Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eFrSky RXSR Ultra Mini Receiver\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eFrSky RXSR Ultra Mini Receiver\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":44005486297251,"sku":"TES-EVN1991","price":2912.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/FrSky-RXSR-Ultra-Mini-Receiver-3-314x252.jpg?v=1707828182","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/frsky-rxsr-ultra-mini-receiver","provider":"The Engineer Store","version":"1.0","type":"link"}