RadioMaster ERS-BA01 Barometer Sensor for ExpressLRS Receivers - CRSF Altitude Telemetry for EdgeTX
RadioMaster ERS-BA01 Barometer Sensor for ExpressLRS Receivers - CRSF Altitude Telemetry for EdgeTX
RadioMaster
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Overview
The RadioMaster ERS-BA01 is a barometer sensor that provides accurate, real-time relative altitude telemetry for compatible ExpressLRS PWM receivers. It measures barometric pressure and sends altitude data back to your EdgeTX radio for clear, responsive altitude monitoring.
As part of the ERS sensor family, the ERS-BA01 supports daisy-chain expansion via pass-through wiring, making it easy to add additional ERS telemetry modules in a linear chain.
Launch Video
Key Features
- Real-time altitude telemetry: Converts barometric pressure into relative altitude data for display on your radio.
- Daisy chain expansion: Pass-through design for scalable telemetry with additional ERS sensors.
- ExpressLRS compatible: Designed to integrate with supported ExpressLRS PWM receivers via CRSF telemetry.
- RM Sensor Configurator support: Works with the RadioMaster Sensor Configurator LUA for sensor setup, telemetry display, and logging.
Compatible Receivers
Plug-and-play compatible receivers
- ER6 2.4GHz ExpressLRS PWM Receiver
- ER8 2.4GHz ExpressLRS PWM Receiver
- ER8G ExpressLRS PWM Receiver
- ER8GV ExpressLRS PWM Receiver
Compatibility note (non plug-and-play PWM ExpressLRS receivers)
Most PWM ExpressLRS receivers are compatible. Receivers without a dedicated UART port require reconfiguration to support external sensors: reassign two PWM output pins as a serial UART (TX and RX) using the receiver Web UI (WiFi mode) or the ExpressLRS LUA script. For receivers that only provide standard servo pins, an optional adapter cable (UART to dual PWM) may be required.
Specifications
| Item | ERS-BA01 Barometer Sensor |
| Operating voltage | 5-8.4 V |
| Operating current | 9 mA |
| Altitude accuracy | ±0.5 m |
| Temperature range | -10 °C to +85 °C |
| Size | 23.5 x 13 x 7 mm |
| Weight | 3.5 g |
Downloads
For product support, setup questions, or after-sales assistance, contact support@rcdrone.top or visit https://rcdrone.top/.
What's Included
- 1 x ERS-BA01 Precision Barometric Altitude Sensor
- 3 x Heat-shrinkable tube
- 1 x Manual QR code card
Details
Add accurate relative-altitude telemetry to compatible ExpressLRS PWM receivers with the ERS-BA01 barometer sensor.
Setup and manage ERS sensors using the RadioMaster Sensor Configurator LUA on EdgeTX.
Pass-through wiring supports linear daisy-chaining, making it easy to expand your telemetry setup with additional ERS modules.
Real-time barometric pressure readings are converted into responsive altitude telemetry on your EdgeTX radio.
Plug-and-play with ER6, ER8, ER8G, and ER8GV receivers; other PWM ExpressLRS receivers may require UART pin reassignment.
Compact 23.5 × 13 × 7 mm module fits easily into tight RC builds while adding altitude telemetry.
Package includes the ERS-BA01 sensor, a manual QR code card, and three heat-shrink tubes.
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