Radiomaster ER3C-i 2.4GHz ELRS PWM Receiver

The Radiomaster ER3C-i is a 3-channel 2.4GHz ExpressLRS receiver with PWM outputs and an integrated ceramic antenna, designed for fixed-wing aircraft, surface RC vehicles, and simple control applications where traditional servo outputs are required. Compact and lightweight, it brings ELRS range and reliability to builds that don't need serial protocols.

Key features

• 3 independent PWM channels for direct servo and brushed ESC control

• 2.4GHz ExpressLRS protocol with integrated ceramic antenna for clutter-free installation

• Ultra-compact footprint and sub-2g weight, ideal for lightweight fixed-wing and micro surface RC

• Wide input voltage compatibility (typically 3.3–8.4V) for use with standard receiver power sources

• One-button binding and firmware update via passthrough

Well-suited to fixed-wing trainer and scale builds, RC cars, boats, or any application where PWM servo control is needed without the complexity of flight-controller integration. The integrated antenna eliminates fragile pigtails and simplifies mounting in tight fuselages.