Radiomaster Boxer ELRS Radio Controller (M2)

RadioMaster Boxer 2.4GHz Transmitter – The Ultimate Compact Powerhouse for FPV and RC PilotsIntroductionAt The FPV Project, we understand what seasoned pilots demand — reliability, precision, and seamless control. The RadioMaster Boxer 2.4GHz Transmitter represents the perfect balance between compact ergonomics and full-size performance. Designed for both FPV drone pilots and traditional RC enthusiasts, this transmitter combines advanced radio technology with exceptional comfort and customization, making it a go-to choice for those who refuse to compromise.Exceptional Design and Build QualityBuilt from high-grade composite materials and featuring a meticulously engineered grip, the Boxer’s compact form factor is deceptively powerful. Weighing only 532 grams, it fits naturally in your hands for long flying sessions. The textured rubber grips ensure a secure hold even in humid outdoor environments, while the fabric carry handle and optional protective case add unmatched portability for professional pilots on the move.Every switch, dial, and slider is positioned for intuitive thumb or pinch-style flying, reflecting thousands of hours of ergonomic refinement.Full-Size Hall Effect Gimbals – Precision at Your FingertipsThe full-size Hall Effect gimbals are the centerpiece of the Boxer 2.4GHz. These gimbals use non-contact magnetic sensors to provide ultra-smooth, long-life control with zero drift.Key Gimbal Features:CNC-machined aluminum gimbal facesAdjustable spring tension and stick endsSmooth center detent and no dead-zone lagLifetime-rated Hall Effect sensorsThis results in highly stable control, whether you’re executing high-G maneuvers in FPV racing or performing precise throttle holds in aerial photography.Compact Design with Excellent Ergonomics SizeRadio OverviewExpressLRS (ELRS) – Next-Generation RF TechnologyThe Boxer 2.4GHz comes with a built-in ExpressLRS module, one of the fastest, most reliable open-source radio links available today.Performance Highlights:Frequency range: 2.4 GHz (2.400 – 2.480 GHz)Latency as low as 5 millisecondsMaximum output power: 1 WattDynamic power scaling for extended range and efficiencyFully compatible with all ExpressLRS 2.x and 3.x receiversELRS automatically adjusts transmission parameters in real time, optimizing both range and latency for your environment. Whether flying freestyle quads or long-range fixed wings, you get crystal-clear signal integrity every time.EdgeTX Firmware – Freedom to CustomizePre-installed with EdgeTX, the open-source firmware trusted by professionals worldwide, the Boxer 2.4GHz offers limitless customization possibilities:Create multi-model profiles for drones, planes, cars, or boatsAdvanced telemetry and audio alertsConfigurable mixes, trims, and curvesLua scripting for advanced automationRapid firmware updates via USB-C or SD cardYou can fine-tune every control response to your flying style. The EdgeTX interface is intuitive yet infinitely deep, allowing complete mastery of your radio system.Battery and Power System – Endurance Meets EfficiencyThe Boxer supports multiple battery configurations for unmatched versatility:Battery TypeVoltageCapacityFlight Time2S LiPo Pack7.4 V6200 mAhUp to 20 hours continuous2× 18650 Li-ion Cells7.4 V5000 mAh (typical)Approx. 16 hoursThe transmitter features a USB-C charging port and supports 2 A fast charging. Power management is handled by an internal circuit that ensures balanced cell charging and over-voltage protection.Connectivity and ExpansionThe Boxer 2.4GHz supports both internal and external RF modules, ensuring full compatibility with legacy and cutting-edge systems alike.Connectivity Ports:External JR module bay for Crossfire, Ghost, and Tracer modulesTrainer Port for buddy box training and flight instructionAudio Jack for headphones or speaker outputUSB-C Port for simulator support (Windows/Mac/Linux)SD Card Slot for firmware updates and sound packsWith simulator compatibility, you can practice on Liftoff, Velocidrone, or FPV Freerider directly from the Boxer — no adapters required.Advanced Telemetry & System FeedbackReal-time telemetry ensures pilots have access to essential flight data. Supported telemetry systems include:RSSI / LQ Monitoring for link qualityBattery Voltage Feedback for receiver packsGPS Coordinates and Altitude Data (when receiver supports it)Temperature and Current Telemetry for in-depth diagnosticsEdgeTX displays these parameters graphically and can announce warnings through voice prompts, keeping you informed without taking your eyes off the sky.Technical SpecificationsSpecificationDetailsDimensions235 × 178 × 77 mmWeight532.5 g (without battery)RF SystemExpressLRS 2.4 GHz / Multi-Protocol (4-in-1 option)ChannelsUp to 16 channels (Expandable to 24 via EdgeTX)FirmwareEdgeTX (Open Source)Display128×64 Monochrome LCDProcessorSTM32F407 ARM Cortex-M4Battery Type2S LiPo / 2× 18650 Li-IonCharging PortUSB-C (2 A Fast Charge Supported)Antenna TypeRemovable T-Style 2.4 GHzOperating Voltage6.6 V – 8.4 VOperating Temperature−10 °C to 60 °CIdeal ApplicationsFPV Freestyle Pilots: Low-latency ELRS mode ensures buttery control.Long-Range Explorers: Up to 40 km range with optimized antenna and receiver combo.RC Plane Hobbyists: Built-in mixes for flaps, elevons, and dual rates.Drone Racing Teams: Lightweight body and rapid signal recovery at high frequencies.STEM Education and Training: Trainer mode enables dual control for safe learning.Comparison – Boxer vs CompetitorsFeatureRadioMaster Boxer 2.4GHzRadiomaster TX16SJumper T20Weight532 g820 g570 gForm FactorCompact HybridFull SizeCompactGimbalsFull Hall EffectFull Hall EffectHall EffectFirmwareEdgeTXEdgeTXEdgeTXRF SystemELRS / 4-in-14-in-1ELRSBattery LifeUp to 20 Hours12 Hours15 HoursPrice TierMid-RangeHighMid-RangeThe Boxer delivers the same professional performance as larger transmitters but at a lighter weight, lower cost, and higher convenience factor. Read More About Lipo Batteries by clicking the link below: https://oscarliang.com/fpv-drone-guide/Checkout our Frames Collection by clicking the link below: https://thefpvproject.com/product-category/frames/1S = 1 cell  = 3.7V 2S = 2 cells = 7.4V 3S = 3 cells = 11.1V 4S = 4 cells = 14.8V 5S = 5 cells = 18.5V 6S = 6 cells = 22.2VFor example, we call a 14.8V battery a “4-cell” or “4S” battery.LiPo battery is designed to operate within a safe voltage range, from 3V to 4.2V. Discharging below 3V could cause irreversible performance loss and even damage to the battery. Overcharging above 4.2V could be dangerous and eventually cause a fire.However, it’s advisable to stop discharging when it reaches 3.5V for battery health reasons. For example for a 3S Lipo, the max voltage is 12.6V, and you should land when the voltage reaches 10.5V (at 3.5V per cell).