HelloRadioSky V12 CNCMAX 2.4GHz Dual-Band ExpressLRS Radio Transmitter 1000mW EdgeTX 2.4in Screen
HelloRadioSky V12 CNCMAX 2.4GHz Dual-Band ExpressLRS Radio Transmitter 1000mW EdgeTX 2.4in Screen
HelloRadioSky
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Overview
HelloRadioSky V12 CNCMAX is a 2.4GHz dual-frequency ExpressLRS (ELRS) radio transmitter designed for FPV racer drones and compatible RC models such as airplanes and helicopters. It runs EdgeTX on an STM32H750XBH6 (STM32 H7) main control platform, integrates an LR1121 ELRS transmitter chip, and features a 2.4-inch TFT color screen, dual-turbo (dual fan) cooling, and a 2×21700 battery compartment.
Key Features
- 2.4GHz dual-frequency / dual-band ExpressLRS (built-in high-frequency module)
- TX module power: max 1000mW
- Main control: H750 (STM32H750XBH6 / STM32 H7)
- ELRS transmitter chip: Semtech LR1121; supports 2.4GHz ExpressLRS (ELRS) protocol
- 2.4-inch TFT full-color screen
- Hall effect joystick sensor; CNC aluminum (CNC metal) gimbals and CNC aluminum (CNC metal) buttons (CNCMAX)
- Cooling system: dual-turbo fans (dual fan cooling)
- Multi-functional USB Type-C port: charging, firmware upgrade, simulator, and data transfer
- Battery compartment: standard 21700 (power supply: 2×21700 batteries; batteries not included)
- Shell: optional colored shells (color optional); available in multiple color combinations
For product support and after-sales service, contact support@rcdrone.top or visit https://rcdrone.top/.
Specifications
| Brand | HelloRadioSky |
| Model | V12 CNCMAX |
| Transmission frequency | 2.4GHz |
| Main control chip | STM32H750XBH6 |
| ELRS transmitter chip | LR1121 |
| Transmitter module | Built-in ExpressLRS high-frequency module |
| Built-in high-frequency | Dual-frequency / dual-band ELRS |
| TX module power | Max 1000mW |
| Channels | 12+ (receiver-dependent); more than 12 channels (depending on the receiver) |
| Operating / working current | 260mA |
| Operating / working voltage | 6.6-8.4V DC |
| Software system | EdgeTX |
| Display | 2.4-inch TFT color screen |
| Cooling system | Dual-channel turbine fan; dual-turbo fans |
| Power supply | 2*21700 batteries (batteries not included) |
| Upgrade method | USB online upgrade supported |
| USB port | Type-C (charging / upgrade / simulator / data transfer) |
| Joystick sensor | Hall; Hall effect joystick sensor |
| Antenna (CNCMAX) | Internal and external dual antennas |
| Gimbal material (CNCMAX) | CNC aluminum; CNC metal |
| Button material (CNCMAX) | CNC aluminum; CNC metal |
| Dimensions | 179*125*55 mm |
| Weight | 360 g (without battery) |
What’s Included
- HelloRadioSky V12 CNCMAX radio transmitter
- Carrying case
- USB cable
- Lanyard (two colors delivered at random)
- Sticker sheet
- Plate and screw set
Applications
- FPV racer drone radio control (ExpressLRS / ELRS)
- RC airplane and RC helicopter control
- Simulator use via Type-C connection
Details
Choose the CNCMAX upgrade for CNC metal gimbals and buttons plus dual internal/external antennas, while keeping the same H750 platform and 1000mW ELRS power.
EdgeTX control with a bright 2.4-inch color display and CNC metal gimbals for precise stick feel.
Core hardware focuses on fast response (STM32 H7 + LR1121) with practical extras like dual-fan cooling, Type‑C connectivity, and a 21700 battery compartment.
Built around the Semtech LR1121 chip to run 2.4GHz ExpressLRS for dependable control links.
An STM32 H7 main control chip provides the computing headroom EdgeTX needs for smooth UI and model setups.
The full-color screen stays clear across different shell color options for quick checks at the field.
Dual turbine fans help keep output stable during higher-power sessions.
Powered by two 21700 cells (not included) to support longer sessions without frequent battery swaps.
The USB‑C port handles charging, firmware updates, simulator connection, and data transfer from one connector.
Mix-and-match color combinations make it easy to match the transmitter to your build style.
Included accessories cover transport and setup: a carrying case, USB cable, lanyard, stickers, and mounting hardware.
Key specs at a glance: 2.4GHz ExpressLRS, up to 1000mW output, EdgeTX system, dual-fan cooling, and 2×21700 power.
