The RadioMaster MT12 is a pioneering open-source surface radio, and the first surface radio officially supported by EdgeTX, ExpressLRS, and the Multi-module project. Boasting 10 physical inputs and the capability to handle either 16 or 32 channels*, the MT12 is primed for a wide array of surface models, from cars and trucks to boats and beyond. Featuring extensive customizability and a versatile operating system, the MT12 stands out as a highly configurable surface radio, prepared to excel in virtually any scenario.

RadioMaster MT12 Surface Radio Controller

Launch Video

Features

Available with Built-in ExpressLRS Backpack or 4in1 MPM RF modules
Featuring a powerful STM32F407VGT6 with 1MB Flash
Preinstalled EdgeTX firmware
QC3.0 fast charging supporting 2.0A MAX
Compact design with excellent ergonomics
Oversized battery compartment - 2 x 18650 cells or a 2s 7.4v 5000mah battery pack (Batteries not included)
Standard Nano module compartment
RadioMaster standardized button layout
Rotatable antenna
Customizable base switches or 4 way joystick included

Specification MT12

Item: MT12 Surface Radio
Physical dimensions: 177.8*118.4*207.8mm
Weight: 480 grams
Operating frequency: 2.400GHz-2.480GHz
Internal RF Options: 4-in-1 multi-protocol / ELRS 2.4GHz
Supported protocols: Module dependent
Operational current: 160mA for 4in1 / 320mA for ELRS
Operational voltage: DC 6.6-8.4V
Operating system: EdgeTX
Control channels: 16 as standard, ability for expansion 32 Channels (4in1 only)
Display: 128*64 Monochrome LCD
Battery: 2 x 18650 cells or a 2s 7.4v 5000mah battery pack (Batteries not included)
Charging: Built in USB-C Charging
Firmware Upgrade method: Via USB or SD card
Wheel and Trigger sensor: Hall-effect
Module bay: Nano size (RadioMaster Ranger Nano Module / RadioMaster RM 4in1 module / TBS Crossfire Nano module)

*32 channels requires a 4in1 radio and additional 4in1 RF module along with compatible receivers

Specification ER3C-i (Included with ExpressLRS version)

Item: ER3C-i 2.4GHz ELRS PWM Receiver
Power supply: DC 4.5 - 8.4V
Antenna type: Built-in high-sensitivity ceramic antenna
Wireless protocol: ExpressLRS 3.3.0 pre-installed
Output channel: 3CH PWM
Telemetry power: 10mW
Battery voltage detection range: DC 4.0 - 35V
Weight: 4.2 grams
Dimensions: 26.1*18.5*13.0 mm
Firmware: Device Category: Radiomaster 2.4Ghz / Device: RadioMaster ER3C-i

Specification R85C (Included with 4in1 version)

Item: R85C Receiver
Power supply: DC 4.5 - 8.4V
Frequency range: 2400-2483.5Mhz
Support protocol: D8/D16/SFHSS
Output channel: 5CH PWM
Antenna type: high-sensitivity 2.4G antenna
Telemetry power: 100mw / 20dbm
Weight: 5.7 grams
Dimensions: 31.0*18.5*13.0 mm

EdgeTX Operating System

Preinstalled with EdgeTX, the MT12 has cutting edge software fit for its class-leading hardware. RadioMaster works closely with the EdgeTX team to develop new features and optimize the user experience for surface models. We will continue to contribute and support projects like EdgeTX, ensuring the concepts of open standards are carried forward.
For more information, please visit https://edgetx.org/

RadioMaster MT12 Surface Radio Controller

Available with ExpressLRS and 4in1 Version

In addition to the popular internal 4-in-1 Multi-module, the MT12 is also available with an internal 2.4GHz ExpressLRS (ELRS) module. Designed to provide reliable long-distance control, super low latency, and high refresh rates. ELRS is a revolutionary open-source protocol taking the R/C industry by storm.

RadioMaster MT12 Surface Radio Controller

ExpressLRS VERSION
ExpressLRS delivers ultra-fast response modes for instant control and precision, with a reliable, robust link quality for pushing the limits of your adventures.
For more information, please visit www.expresslrs.org

MT12 Surface Radio Controller

4in1 VERSION
One remote control all of your cars. The 4in1 internal RF system has protocols, for many popular brands of cars and receivers.
Click here to visit the list of supported protocols

RadioMaster MT12 Surface Radio Controller

Dimensions

Radio Overview

RadioMaster MT12 Surface Radio Controller

Instructional Videos

To enhance your experience with our MT12 radio, we offer a series of instructional videos on using the MT12 Surface Radio. Please click here to view more tutorial videos.

Accessories

Download

Package Includes

1 * MT12 Surface Radio ExpressLRS Version
1 * ER3C-i 2.4GHz ELRS PWM Receiver
1 * Dual Switch Expansion module
1 * 4 Way Joystick Expansion module
1 * Nano Adapter
1 * USB-C Cable
1 * Leather Lanyard
1 * Custom RadioMaster signature carry case
1 * 18650 Battery Tray
1 * Screen Protector
1 * Stickers
1 * Manual

1 * MT12 Surface Radio 4in1 Version
1 * R85C Receiver
1 * Dual Switch Expansion module
1 * 4 Way Joystick Expansion module
1 * Nano Adapter
1 * USB-C Cable
1 * Leather Lanyard
1 * Custom RadioMaster signature carry case
1 * 18650 Battery Tray
1 * Screen Protector
1 * Stickers
1 * Manual

RadioMaster MT12 Surface Radio Controller

The MT12 is now compatible with mLRS!

The mLRS project offers an open-source, high-performance radio system based on LoRa technology, operating at 2.4 GHz, 915/868 MHz, and 433 MHz/70 cm, designed to deliver a secure, reliable, and robust link under any conditions.

While designed initially with MAVLink optimization in mind, mLRS always provides a transparent serial link, making it suitable for a wide range of applications. Its design ensures the strongest possible signal integrity while maintaining a relatively high data rate, balancing performance and reliability without compromise.

Find out more about mLRS here

Get the mLRS flasher desktop app here