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 ESCs 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.
Built on the ExpressLRS platform and equipped with dual Semtech LR1121 transceivers, the ER12 utilizes a dual-band Gemini X RF architecture operating on both 2.4 GHz and Sub-G 900 MHz. The result is a stable, consistent control link across a wide range of operating environments, with an architecture that prioritizes dependable operation.
The ER12 uses amplified PWM outputs to help maintain reliable servo signals over long leads and extension cables commonly used in larger aircraft. The amplified outputs also help ensure clean and consistent signals when operating larger, high-torque servos that place greater demands on the control system. The receiver also features three independent volt
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