RadioMaster ER12 PWM GemX RX

FEATURES

• Dual-band ExpressLRS with Gemini X, covering 2.4GHz and 900MHz Sub-G
• Built on dual Semtech LR1121 transceivers
• 12 PWM outputs plus CRSF or SBUS serial output, with bidirectional UART
• Dedicated XT30 power input for high-current servo systems
• Amplified PWM outputs for long servo leads and high-torque servos
• Telemetry power up to 100mW
• Three voltage telemetry inputs: EXT-V (up to 70V), receiver supply voltage (up to 12V) and XT30 input (up to 12V)
• External UART port for telemetry and expansion
• Replaceable MMCX antenna connectors
• Wi-Fi updates and WebUI configuration without disassembly
• Durable injection-molded housing
• Designed for large fixed-wing aircraft with multiple servos and higher current loads
• 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: 12x PWM
• Serial Output: CRSF / SBUS
• Telemetry Power: Up to 100mW (adjustable via LUA)
• EXT-V Voltage Detection Range: DC 4.0-70V
• Bus Interface: CRSF
• Antenna: 25cm high-sensitivity, MMCX connector
• Weight: 22.5g (without antenna)
• Dimensions: 51.0 x 37.6 x 14.5mm
• Firmware Target: RadioMaster Dual 2.4GHz/900MHz Receiver
• Device Name: ER12 Dual Band True Diversity + 12xPWM RX
• ELRS Firmware: Version 4.1.0 or higher required
• XT30 Power Note: output voltage matches input voltage, so use only servos rated for the applied voltage

PACKAGE CONTENTS

• 1x ER12 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