| Product type | Full-size programmable radio transmitter |
|---|---|
| Internal radio system | ExpressLRS 2.4GHz |
| Operating system | EdgeTX |
| Channels | Up to 16, depending on the receiver and configuration |
| Gimbals | Full-size V4.0 Hall-effect gimbals |
| Display | 128 × 64 monochrome LCD |
| External module bay | JR-compatible |
| Operating voltage | 6.6–8.4V DC |
| Battery options | Two compatible 3.7V 18650 Li-ion cells or a compatible 2S 7.4V LiPo pack; battery not included |
| Dimensions | 235 × 178 × 77 mm |
| Weight | 532.5 g without an installed battery |
RadioMaster Boxer ELRS Radio Controller
The RadioMaster Boxer ELRS is a full-size EdgeTX transmitter with Hall-effect gimbals, an internal ExpressLRS 2.4GHz module and a JR-compatible expansion bay.
- Best for: FPV pilots using compatible ExpressLRS 2.4GHz receivers.
- Not ideal for: Proprietary camera drones or aircraft using a different receiver protocol.
- Key note: Battery not included; verify the FCC or EU LBT regional version.
Product Review Video
- Description
- Additional information
- Setup & Binding
- Power & Region
Description
RadioMaster Boxer ELRS: Quick Verdict
The RadioMaster Boxer ELRS is a full-size FPV radio controller for pilots who want comfortable Hall-effect gimbals, EdgeTX customization, an internal ExpressLRS 2.4GHz module and room to expand through a JR-compatible module bay.
It is a useful step up from smaller travel radios when ergonomics, switch access and longer flying sessions matter. It is not a universal transmitter, however. The aircraft must have a compatible ExpressLRS 2.4GHz receiver, and buyers must add an appropriate transmitter battery before using the radio.
Best for
FPV pilots building an ExpressLRS 2.4GHz ecosystem who prefer full-size controls and EdgeTX flexibility.
Not ideal for
DJI camera-drone owners, aircraft using an incompatible receiver protocol or buyers wanting a battery-powered plug-and-play controller.
Verify before buying
Confirm the ELRS 2.4GHz version, FCC or EU LBT regional firmware, receiver compatibility and the battery you plan to install.
Buyer-Critical Specifications
Why Choose the Boxer ELRS?
The Boxer occupies a useful middle ground between RadioMaster’s smaller Pocket-style controller and its larger premium transmitters. Its full-size Hall-effect gimbals provide more stick area than a compact travel radio, while the body remains smaller than many flagship transmitters.
The internal ExpressLRS module is the key buying distinction. It is designed for aircraft equipped with compatible ExpressLRS 2.4GHz receivers, and the radio supports the ExpressLRS Lua tools used to configure and bind that system. The internal module also has a cooling fan to manage heat during operation.
EdgeTX gives the Boxer extensive model, switch, channel, telemetry and input configuration options. That flexibility is useful for FPV pilots who expect to use the same transmitter with multiple aircraft, but it also means the Boxer requires more initial configuration than a controller dedicated to one consumer drone.
The JR-compatible external module bay provides an expansion path for another supported radio module. Adding a module does not make every receiver compatible automatically, so buyers must still verify the module protocol, frequency band, firmware and receiver requirements.
Receiver and Drone Compatibility
This product is the Boxer with an internal ExpressLRS 2.4GHz module. The drone or RC model needs a compatible ExpressLRS 2.4GHz receiver. A receiver that only shares the same 2.4GHz frequency is not necessarily compatible.
The receiver and transmitter should use compatible ExpressLRS firmware, regional settings and binding configuration. Binding may use a shared binding phrase or the supported manual binding process. Complete binding and failsafe checks before installing propellers or attempting a flight.
Important: The Boxer is a radio transmitter, not a complete FPV control system. It does not include a drone receiver, goggles, video transmitter, battery charger for flight batteries or any other aircraft electronics.
Do not assume that this controller will operate DJI Mini, DJI Neo or DJI Avata aircraft through their normal proprietary control systems. Its primary internal radio system is ExpressLRS 2.4GHz.
Battery and Charging Requirements
The retailer and manufacturer listings state that the transmitter battery is not included. The Boxer supports either two compatible 3.7V 18650 Li-ion cells or a compatible 2S 7.4V LiPo transmitter pack within its 6.6–8.4V operating range.
The official manual specifies unprotected button-top 18650 cells when using the included battery tray. Confirm cell style, polarity and fit before installation. Do not combine cells with different models, capacities, ages or charge states.
The built-in USB-C charging circuit is intended for supported lithium batteries with a 3.7V nominal and 4.2V fully charged cell voltage. RadioMaster warns against charging an incompatible battery chemistry or a cell designed for a different maximum voltage. Never charge damaged batteries or leave charging batteries unattended.
FCC and EU LBT Versions
RadioMaster produces separate FCC and EU LBT regional versions. The current Amazon listing confirms the black ELRS 2.4GHz Mode 2 transmitter but does not clearly identify the regional firmware version in the supplied description.
U.S. buyers should verify that the retailer is supplying the ELRS/FCC version. European buyers should verify the correct EU LBT version and local requirements. Do not change regulatory domains merely to access different output settings.
What Comes With the Radio?
The documented package includes the Boxer radio transmitter, RadioMaster carrying case, T-shaped antenna, USB-C cable, gimbal protector, 1.5 mm hex key, two M4 × 4 screws, four low-tension springs, an 18650 battery tray, stickers and a manual.
A transmitter battery and aircraft receiver are not included. Verify the Amazon package contents against the current offer before ordering because third-party seller bundles may change.
Important Limitations
- The radio does not include a transmitter battery.
- The aircraft needs a compatible ExpressLRS 2.4GHz receiver.
- ExpressLRS and EdgeTX setup may be unfamiliar to a first-time RC pilot.
- Control-link capability does not determine video range, aircraft endurance or legal flight distance.
- The Amazon description does not clearly confirm FCC versus EU LBT firmware.
- The retailer copy contains an inconsistent reference to a transparent edition even though the selected product is the black version.
What Else Will You Need?
- A supported transmitter battery
- An aircraft with an ExpressLRS 2.4GHz receiver
- A compatible USB connection and computer for firmware or EdgeTX management when needed
- An FPV drone, video system and goggles appropriate for your chosen aircraft
- Simulator software if you plan to practice before flying
Related RadioMaster Boxer ELRS Radio Controller buyer guides
Use the product page for the purchase decision and the guides below for deeper research.
Long-Range FPV Drones: Range, Radio Links and Safe Setup
Long-range FPV drones do not have one dependable maximum distance. Usable range ends at the first limit reached by the control link, video link, battery reserve, navigation setup, terrain, interference, or flight rules.
Final Verdict
The RadioMaster Boxer ELRS is a strong radio-controller foundation for pilots who want full-size Hall gimbals, EdgeTX flexibility and an internal ExpressLRS 2.4GHz module. Its larger controls and expansion bay make it more comfortable and adaptable than a basic compact radio for many pilots.
Buy it only after confirming that your aircraft uses a compatible ExpressLRS receiver, selecting a suitable transmitter battery and verifying the correct FCC or EU LBT version. It should not be treated as a universal controller or a complete long-range FPV system.
Frequently Asked Questions
Will the RadioMaster Boxer work with any FPV drone?
No. This version requires a compatible ExpressLRS 2.4GHz receiver. Aircraft using another protocol or a proprietary controller are not automatically compatible.
Does the Boxer include a battery?
No. Buyers need two compatible 3.7V 18650 Li-ion cells or a compatible 2S 7.4V LiPo transmitter pack.
What is the difference between ELRS and 4-in-1 versions?
The ELRS version includes an internal ExpressLRS 2.4GHz module. The 4-in-1 version supports a different collection of RC protocols. Choose the version that matches the receivers you intend to use.
Is this the FCC version?
The Amazon description confirms ELRS 2.4GHz and Mode 2 but does not clearly identify FCC or EU LBT firmware. U.S. buyers should verify the ELRS/FCC version with the retailer before buying.
Can the Boxer be used with an FPV simulator?
The Boxer has a USB-C data port and EdgeTX, making simulator use possible with supported software and configuration. Verify the simulator’s controller requirements and configure the correct USB mode.
Should the antenna be installed before turning on the radio?
Yes. RadioMaster instructs users to install the antenna before installing the battery and powering the radio. Operating the internal RF module without its antenna can damage the module.
Specifications, supported battery types and package contents were checked against the official RadioMaster Boxer product page and current manufacturer manual. Retailer variation, regional firmware and bundle contents should be verified before buying.
Additional information
| Brand | RadioMaster |
|---|---|
| Model | Boxer |
| Product Type | Radio Transmitter |
| Color | Black |
| Control Mode | Mode 2 |
| Radio Protocol | ExpressLRS 2.4GHz |
| Operating System | EdgeTX |
| Channels | Up to 16; receiver dependent |
| Gimbals | Full-size V4.0 Hall-effect gimbals |
| Frequency | 2.400GHz–2.480GHz |
| Processor | STM32F407VGT6 |
| Display | 128 × 64 monochrome LCD |
| Module Bay | JR-compatible external module bay |
| Operating Voltage | 6.6–8.4V DC |
| Battery Options | 2S 7.4V LiPo or two compatible 3.7V 18650 Li-ion cells; not included |
| Charging | USB-C; QC3.0 support up to 2.0A |
| Dimensions | 235 × 178 × 77 mm |
| Weight | 532.5 g without battery |
| Regional Versions | FCC and EU LBT versions available; retailer version must be verified |
Before Powering On
- Confirm that the transmitter is the ELRS 2.4GHz version.
- Install the supplied antenna before installing batteries or powering the internal RF module.
- Install two matching supported 18650 cells or a compatible 2S transmitter pack with the correct polarity.
- Remove the aircraft propellers before performing receiver setup, binding or failsafe testing.
Receiver Compatibility
The aircraft needs an ExpressLRS 2.4GHz receiver. A receiver using 915MHz ExpressLRS, another 2.4GHz protocol or a proprietary consumer-drone system is not a direct match for the internal module.
Check the transmitter and receiver firmware versions before binding. ExpressLRS devices may be paired with a shared binding phrase or through the supported manual bind procedure. Use the current ExpressLRS binding documentation for the installed firmware.
First Model Setup
- Create a separate EdgeTX model profile for the aircraft.
- Enable the internal ExpressLRS module and configure the required channel mapping.
- Assign arm, flight-mode, buzzer and other switches deliberately.
- Confirm correct stick direction and channel response in the flight-controller configurator.
- Configure and test the receiver failsafe before flight.
- Perform a range test in a safe area with the aircraft disarmed and propellers removed.
Do not copy another pilot’s switch layout blindly. Verify every control against your own aircraft before installing propellers.
Battery Options
The Boxer operates from 6.6–8.4V DC and supports two compatible 3.7V 18650 Li-ion cells or a compatible 2S 7.4V LiPo transmitter pack. Batteries are not included.
When using the included 18650 tray, the current RadioMaster manual specifies matching unprotected button-top cells. Confirm polarity and fit before closing the battery compartment.
USB-C Charging
The built-in charger is intended for supported lithium cells with a 3.7V nominal and 4.2V fully charged voltage. Do not use an unsupported chemistry or cells designed for a different maximum charge voltage.
- Do not charge damaged, wet, swollen or mismatched batteries.
- Do not charge with reversed polarity.
- Charge in a safe area away from combustible materials.
- Do not leave charging batteries unattended.
FCC Versus EU LBT
RadioMaster offers separate ELRS/FCC and ELRS/LBT versions. The attached Amazon listing does not clearly state the regional version, so this should be confirmed before buying.
- United States: verify the ELRS/FCC version.
- European markets: verify the appropriate EU LBT version and local requirements.
- Do not change regulatory domains solely to bypass regional limits.
Retailer Listing Check
The selected product should be the black RadioMaster Boxer, Mode 2, with the internal ExpressLRS 2.4GHz module. Do not substitute the RadioMaster Pocket, 4-in-1 Boxer or CC2500 Boxer unless that different protocol version is intentional.
