RadioMaster MT12 16-Channel ELRS Surface Radio Controller with ER3C-I Receiver
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RadioMaster MT12 Surface Radio Controller – 16 Channel ExpressLRS Control
The RadioMaster MT12 is the first surface radio officially supported by EdgeTX and ExpressLRS. With 10 physical inputs and support for up to 16 channels, it is designed for RC cars, trucks, boats, and other surface models.
Featuring powerful customization options and a flexible operating system, the MT12 delivers precise control and a highly configurable experience for every RC application.
Highlights
- Official EdgeTX & ExpressLRS supported surface radio
- Up to 16 channels with 10 physical inputs
- Designed for cars, trucks, boats, and more
- Advanced customization and flexible configuration

EdgeTX Operating System
Pre-installed with EdgeTX, the MT12 delivers powerful software features, advanced customization, and a smooth user experience optimized for surface models. RadioMaster continues to support open-source development to bring new features and improvements to the RC community.

ExpressLRS Ready
The MT12 features a built-in 2.4GHz ExpressLRS module, delivering reliable long-range control, ultra-low latency, and high refresh rates for responsive surface model operation.



Versatile Surface Control
Designed for RC cars, boats, crawlers, scale machines, and more, the MT12 provides flexible control with an intuitive button layout and CNC menu wheel for smooth and efficient operation.


Adjustable Trigger & Wheel Tension
The MT12 features adjustable trigger position, trigger spring tension, and wheel resistance, allowing users to fine-tune the controls for a personalized driving experience.


Precision Control with Hall Sensors
Equipped with 4 precision bearings, non-contact HALL sensors, and 5 trim buttons, the MT12 delivers smooth operation, accurate inputs, and fine-tuned control for an enhanced driving experience.


Precision Control with Hall Sensors
Equipped with 4 precision bearings, non-contact HALL sensors, and 5 trim buttons, the MT12 delivers smooth operation, accurate inputs, and fine-tuned control for an enhanced driving experience.



Flexible Expansion Options
The MT12 supports multiple expansion modules, including dual switch and 4-way joystick modules for customized setups. It also features an external Nano module adapter compatible with options like Ranger Nano and TBS Crossfire Nano for expanded functionality.



Flexible Connectivity & Rotating Antenna
The MT12 features a 90° rotating antenna for improved signal positioning, along with multiple connectivity options including USB-C, SD card slot, DSC port, 3.5mm headphone jack, and AUX port for enhanced functionality.


High-Capacity 21700 Battery for Extended Sessions

Customizable RGB Lighting to Match Your Style


Features
- Built-in ExpressLRS Backpack RF module
- 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 | ELRS 2.4GHz |
| Supported Protocols | Module dependent |
| Operational Current | 320mA |
| Operational Voltage | DC 6.6-8.4V |
| Operating System | EdgeTX |
| Control Channels | Maximum 16 (Receiver dependent) |
| 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 | Via USB or SD card |
| Wheel & Trigger Sensor | Hall-effect |
| Module Bay | Nano size (RadioMaster Ranger Nano Module / TBS Crossfire Nano module) |
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 | 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 |
Package Includes
| Item | Quantity |
| MT12 Surface Radio (ExpressLRS) | 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 |