RadioMaster - ER3C-i ELRS Surface Receiver
by RadioMaster

Product Description

Upgrade your RC surface models with the RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver – a high-performance, ultra-long range receiver designed to deliver fast, reliable control. Built on the revolutionary ExpressLRS system, this receiver features a built-in high-sensitivity ceramic antenna for clean installations with no extra antenna wires. It supports 3 PWM channels, enabling precise servo control, and integrates advanced voltage telemetry that automatically detects external battery or receiver/ESC BEC voltages. With a temperature compensated crystal oscillator (TCXO), enjoy stable performance in any environment. Plus, benefit from flexible configuration via Wi-Fi updates and WEBUI setup, making it the ideal choice for RC enthusiasts searching for a dependable, high-quality 2.4GHz receiver.

Key Features:

• Built-in high-sensitivity ceramic antenna for clutter-free installs
• Supports 3 PWM channels for multiple servo operations
• Automatic voltage telemetry detection (DC 4.0 – 35V)
• TCXO ensures stability in any environment
• Based on ExpressLRS 3.3.0 protocol for ultra-long range and fast response
• Wi-Fi updates & WEBUI configuration for flexible control
• Optimized ground-up PCB design

Specifications

• Power Supply: DC 4.5 - 8.4V
• Antenna Type: Built-in high-sensitivity ceramic antenna
• Wireless Protocol: ExpressLRS 3.3.0 pre-installed
• Output Channels: 3CH PWM
• Telemetry Power: 10mW
• Battery Voltage Detection Range: DC 4.0 - 35V
• Weight: 4.2 grams
• Dimensions: 26.1 x 18.5 x 13.0 mm
• Firmware: Radiomaster 2.4GHz / RadioMaster ER3C-i

Package Includes:

• 1 × ER3C-i 2.4GHz ELRS PWM Receiver
• 1 × Voltage telemetry wire
• 1 × User Card