Receiver RadioMaster ER12 Dual-Band GEMINI and GEMINI-X PWM

Product detailed description

Receiver RadioMaster ER12 Dual-Band GEMINI and GEMINI-X PWM

The RadioMaster ER12 is a high-channel-count ExpressLRS PWM receiver designed for large fixed-wing aircraft with multiple servos and demanding power requirements. Its dual-band GEMINI-X RF system combines 2.4GHz and Sub-G 900MHz operation, while amplified PWM outputs help maintain reliable servo signals over long leads and extension cables.

With 12 PWM channels, dedicated serial connectivity, three independent voltage telemetry inputs and an XT30 power input, the ER12 provides a practical and robust control solution for larger aircraft installations. Its MMCX antenna connectors, Wi-Fi configuration and durable injection-molded housing make it easy to install and maintain.

Features:
- ExpressLRS Performance: Low latency, high reliability, and excellent link quality with flexible configuration options.
- Dual-Band Gemini-X RF System (2.4GHz + Sub-G 900MHz): Utilizes both frequency bands to provide enhanced link reliability across a wide range of operating environments.
- 12 PWM Outputs + Serial Support: Full 12-channel PWM output with dedicated bidirectional UART and serial interfaces for system integration and expansion.
- XT30 Dedicated Power Input: Provides stable, high-current power delivery for demanding servo systems and larger aircraft installations.
- PWM Signal Amplification: Amplified PWM outputs help maintain signal quality over long servo leads and extension cables. They also improve compatibility with larger, high-torque servos, helping ensure reliable control signal delivery throughout the aircraft.
- Independent Multi-Source Voltage Telemetry: Monitor up to three power sources simultaneously using dedicated ADC channels: EXT-V (up to 70V), receiver supply voltage (V-PWM) (up to 12V), and XT30 input voltage (up to 12V).
- External UART Port: Dedicated interface for telemetry, external devices, and system expansion.
- Wi-Fi Updates & WebUI: Configure settings and perform firmware updates wirelessly without disassembly.
- Robust MMCX Antenna Connectors: Secure, serviceable antenna connections for easy maintenance and long-term reliability.
- Durable Injection-Molded Housing: Provides consistent protection and structural durability for demanding installations.
- Application: Designed as a PWM receiver for large fixed-wing aircraft, especially where multiple servos and higher current loads are involved.
- Compatibility: Compatible with all ExpressLRS transmitters and modules, including radios with built-in ELRS.

Specifications:
Item: ER12 PWM - Dual-Band GEMINI and GEMINI-X Receiver
Input Voltage: DC 5.0 – 12.0V
Wireless Protocol: ExpressLRS
Output Channels: 12CH PWM
Serial Output: CRSF / SBUS
Telemetry Power: Up to 100mW (adjustable via LUA)
Voltage Detection Range (EXT-V): DC 4.0 – 70V
Bus Interface: CRSF
Antenna: 25 cm high-sensitivity, MMCX connector
Weight: 22.5 g (without antenna)
Dimensions: 51.0x37.6x14.5 mm
Firmware Target: RadioMaster Dual 2.4GHz/900MHz Receiver
Device Name: ER12 Dual Band True Diversity + 12xPWM RX
ELRS FW Version: Requires version 4.1.0 or Higher

Package includes:
1x ER12 PWM - Dual-Band GEMINI and GEMINI-X Receiver
2x 2.4GHz Antennas
2x Dual-Band Antennas
1x Voltage Telemetry Cable (Type-B)
1x ELRS RX SBUS Cable
1x CRSF Cable