RadioMaster ER3 Pro PWM GemX RX

FEATURES

• Dual-band ExpressLRS with Gemini X, covering 2.4GHz and 900MHz Sub-G
• Built on dual Semtech LR1121 transceivers
• 3 PWM outputs plus CRSF or SBUS serial output
• Telemetry power up to 100mW
• Two voltage telemetry inputs: EXT-V (up to 70V) and receiver supply voltage (up to 12V)
• External UART port with locking connector for telemetry and expansion
• Replaceable MMCX antenna connectors
• Wi-Fi updates and WebUI configuration without disassembly
• Durable injection-molded housing
• Works with all ExpressLRS transmitters and modules, including radios with built-in ELRS

SPECIFICATIONS

• Input Voltage: DC 5.0-12.0V
• Protocol: ExpressLRS
• Frequency Bands: 2.4GHz and 900MHz Sub-G (Gemini X)
• Output Channels: 3x PWM
• Serial Output: CRSF / SBUS
• Telemetry Power: Up to 100mW (adjustable via LUA)
• EXT-V Voltage Detection Range: DC 4.0-70V
• Antenna: 25cm, MMCX connector
• Dimensions: 49.2 x 26.8 x 13.0mm
• Weight: 13.5g (without antennas)
• Firmware Target: RadioMaster Dual 2.4GHz/900MHz Receiver
• Required ELRS Firmware: 4.1.0 or higher

PACKAGE CONTENTS

• 1x ER3 Pro PWM Dual-Band Gemini/Gemini-X Receiver
• 2x 2.4GHz Antenna
• 2x Dual-Band Antenna
• 1x Voltage Telemetry Cable (Type-B)
• 1x CRSF Cable
• 1x ELRS RX SBUS Cable