RadioMaster ERS-BA01 Precision Barometric Altitude Sensor for ExpressLRS Systems

The ERS-BA01 Barometer Sensor provides accurate, real-time altitude data for compatible ExpressLRS receivers. By capturing barometric pressure and converting it into precise relative altitude information, the ERS-BA01 delivers reliable telemetry back to your EdgeTX radio. This sensor provides clear, responsive altitude monitoring. 

As part of the ERS sensor family, the ERS-BA01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.

Features

• 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.

Specifications

• Item: ERS-BA01 Barometer Sensor
• Operating voltage: 5–8.4V
• Operating current: 9mA
• Altitude accuracy: ±0.5m
• Temperature range: –10 ℃ to +85 ℃
• Size: 23.5 × 13 × 7mm
• Weight: 3.5g

Package Includes

• 1 * ERS-BA01 Precision Barometric Altitude Sensor
• 3 * Heat-Shrinkable Tube
• 1 * Manual QR Code Card