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.
2.4GHz RM 4IN1 Module is an RC product from RadioMaster. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
2.4GHz RM 4IN1 Module fits customers looking for RadioMaster items in RadioMaster Modules, ExpressLRS Modules, Multi-Protocol Modules, with RC-MODEL support for choosing the right configuration.
2.4GHz RM 4IN1 Module 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.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Channels, receiver protocols, telemetry, range, redundancy and what to check before matching a transmitter to a model.
A practical binding guide for matching protocol, bind mode, receiver power, model memory, control checks and common binding mistakes.
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
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 | HP0157.4IN1RF |
| All Variant SKUs | HP0157.4IN1RF, HP0157.4IN1RF-LBT |
| Available Variants | FCC; LBT |
| Product Type | External Module |
| RadioMaster Collections | External Module, MULTI-MODULE |
| Product Family | Ranger ExpressLRS module range |
| Application | RF protocol expansion, ExpressLRS links and long-range radio-control setups |
| Item | RM 4IN1 Module |
| Weight | 30g (without antenna) |
| Compatibility | more than 70 RF Protocols |
| Protocol / RF | 2.4GHz, 4-in-1 Multi-Protocol, EdgeTX |
| Dimension | 73*42*22mm (without antenna) |
| Operational voltage | 4.5-8.4V |
| Operational frequency | 2.4G ISM band (2400mHz - 2483mHz) |
| RF Chipsets | CC2500, NRF24L01, A7105 and CYRF6936 |
| Operational current | ≈100mA |
| RF Gain | +20dBm |
Tags: RadioMaster, HP0157.4IN1RF, RadioMaster Modules, Multi-Protocol Modules, ExpressLRS Modules, RC radio
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