Description
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.
Features.
- Dual-Band Gemini-X RF System (2.4GHz + Sub-G 900MHz).
- 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. Important: When using the XT30 to power the receiver and servos, the ESC’s 5V/BEC wire must be disconnected to prevent back-feeding and possible damage.
- 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.
Specifications.
- 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: 51.0 × 37.6 × 14.5 mm
- Firmware Target: RadioMaster Dual 2.4GHz/900MHz Receiver
- Device Name: ER12 Dual Band True Diversity + 12×PWM RX
- ELRS FW Version: Requires version 4.1.0 or Higher
Package Includes.
- 1 * ER12 PWM - Dual-Band GEMINI and GEMINI-X Receiver
- 2 * 2.4GHz Antennas
- 2 * Dual-Band Antennas
- 1 * Voltage Telemetry Cable (Type-B)
- 1 * ELRS RX SBUS Cable
- 1 * CRSF Cable