RadioMaster ER5C V2 2.4GHz ELRS PWM Receiver

The RadioMaster ER5C V2 is a 5-channel PWM ExpressLRS receiver built for fixed-wing aircraft, surface vehicles, and custom platforms that require direct servo or ESC connections. Operating on the 2.4GHz ELRS protocol, it delivers the extreme range and low latency typical of ExpressLRS, bypassing the need for a dedicated flight controller to translate serial data.

Key features

• Outputs 5 direct PWM channels for traditional RC hardware layouts

• Built-in TCXO (Temperature Compensated Crystal Oscillator) ensures reliable RF link stability across extreme heat or cold

• Optimised V2 PCB layout supporting direct power delivery to high-voltage (HV) servos up to 8.4V

• Compact footprint fits easily into tight glider fuselages or waterproof receiver boxes

Specifications

• Protocol: ExpressLRS (ELRS) 2.4GHz

• Output: 5 x PWM channels

• Input Voltage: 4.5V - 8.4V DC

• Oscillator: Built-in TCXO

• Voltage telemetry: external battery or receiver/ESC BEC voltage, detected automatically (telemetry wire included)

• Dimensions: 30 x 18.5 x 13 mm

• Weight: 5.5 g

Note: Because this receiver outputs direct PWM signals, it is not the standard choice for multirotor builds. If you are wiring a receiver to a flight controller for an FPV quadcopter, you will need a serial-based CRSF receiver (such as the RadioMaster RP1 or RP2) instead.