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.
ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems 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.
ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems fits customers looking for RadioMaster items in RadioMaster Accessories, ERS Series Sensors, with RC-MODEL support for choosing the right configuration.
ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems 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 | RM0157.ERS-BA01 |
| All Variant SKUs | RM0157.ERS-BA01 |
| Product Type | ERS Series Sensor |
| RadioMaster Collections | Accessories, ERS Series Sensor |
| Product Family | ERS telemetry sensor range |
| Application | RF protocol expansion, ExpressLRS links and long-range radio-control setups |
| Item | ERS-BA01 Barometer Sensor |
| Weight | 3.5g |
| Protocol / RF | ExpressLRS / ELRS, 2.4GHz, EdgeTX |
| Operating voltage | 5-8.4V |
| Operating current | 9mA |
| Temperature range | -10 ℃ to +85 ℃ |
| Size | 23.5 × 13 × 7mm |
| Real-Time Altitude Telemetry | Converts barometric pressure measurements into accurate relative altitude data for instant feedback on your radio. |
| Expansion-Ready Pass-Through | Includes an in-and-out port for daisy-chaining additional ERS sensors without rewiring your setup. |
| Seamless ExpressLRS Compatibility | Integrates easily with supported ExpressLRS PWM receivers via CRSF for fast and dependable data transmission. |
| Altitude accuracy | ±0.5m |
Tags: RadioMaster, RM0157.ERS-BA01, RadioMaster Accessories, ERS Series Sensors, RC radio
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