Radio systems and receivers: choosing a reliable control link
Channels, receiver protocols, telemetry, range, redundancy and what to check before matching a transmitter to a model.
AX12 External Module Cover
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
AX12 External Module Cover is a RadioMaster product intended for RF protocol expansion, ExpressLRS links and long-range radio-control setups. This page presents the practical buying information in one place: compatibility, SKU, variants, radio protocol, use case and technical details.
The content is written for customer decision-making through RC-MODEL, without supplier prices or outbound purchase routes.
Key Advantages
- Organized for RF protocol expansion, ExpressLRS links and long-range radio-control setups.
- Part of the AX12 Android radio platform.
- Compatibility note: AX12 Radio.
- Includes local product imagery and structured specifications for customer comparison.
Core Specifications
- Product Code: RM0157.AX12-0011
- Product Family: AX12 Android radio platform
- Compatibility: AX12 Radio
- Manufacturer: RadioMaster
- Brand: RadioMaster
- All Variant SKUs: RM0157.AX12-0011
- Product Type: AX12 Spare Parts
- RadioMaster Collections: Accessories, AX12 Spare Parts
- Application: RF protocol expansion, ExpressLRS links and long-range radio-control setups
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
How to bind an RC transmitter and receiver
A practical binding guide for matching protocol, bind mode, receiver power, model memory, control checks and common binding mistakes.
How to set failsafe correctly on an RC aircraft
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
How to set Dual Rates and Expo on an RC transmitter
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
How to perform the first test flight of an RC aircraft
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | RadioMaster |
| Brand | RadioMaster |
| Product Code | RM0157.AX12-0011 |
| All Variant SKUs | RM0157.AX12-0011 |
| Product Type | AX12 Spare Parts |
| RadioMaster Collections | Accessories, AX12 Spare Parts |
| Product Family | AX12 Android radio platform |
| Application | RF protocol expansion, ExpressLRS links and long-range radio-control setups |
| Compatibility | AX12 Radio |
Tags: RadioMaster, RM0157.AX12-0011, RadioMaster Accessories, AX12 Spare Parts, RC radio