Parts/Radio & control/Receivers/RadioMaster ER3Ci Express ELRS 3-Channel 2.4GHz Receiver
RadioMaster ER3Ci Express ELRS 3-Channel 2.4GHz Receiver
RadioMaster

RadioMaster ER3Ci Express ELRS 3-Channel 2.4GHz Receiver

Part # RM-HP0157.RX-ER3CI5.0(1)
Where to buy
$21.99
AMain Hobbies
Seen Oct 12, 2026
$21.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Receiver Overview:

RadioMaster ER3Ci Express ELRS 3-Channel 2.4GHz Receiver. The RadioMaster ER3C-i receiver is based on the high-performance, revolutionary ExpressLRS system, featuring high reliability, highly flexible configuration, ultra-fast response speeds, and an ultra-long receiving range!

The ER3C-i ELRS receiver can drive up to 3 servos and has built-in receiver voltage telemetry and battery telemetry with the ability to automatically detect which voltage input to use. The ER3C-i features a built-in high-sensitivity ceramic antenna, that is designed for all types of surface models and provides a clean install without antenna wires to worry about!

Features:

  • Compatible with all 2.4GHz ExpressLRS modules and transmitters with built-in 2.4GHz ExpressLRS
  • Built-in high-sensitivity ceramic antenna
  • Based on the Revolutionary ExpressLRS System
  • High performance, high reliability, flexible configuration, fast response speed and ultra-long range
  • Automatically detects voltage telemetry of external battery voltage or receiver battery / ESC BEC voltage
  • Optimized ground up PCB design
  • Supports Wi-Fi updates and WEBUI configuration
  • Built-in a TCXO (temperature-compensated crystal oscillator), ensures stable and accurate performance in any environment
  • Designed for all types of surface models
  • Extremely lightweight and compact

Specifications:

  • Input Voltage: DC 4.5 - 8.4V
  • Channels: 3CH PWM
  • Frequency Range: 2400-2483.5Mhz
  • Wireless protocol: ExpressLRS 3.3.0 pre-installed
  • Telemetry Power: 10mW
  • Antenna Type: Built-in high-sensitivity ceramic antenna
  • Dimensions: 26.1x18.5x13mm
  • Weight: 4.2g
  • Battery voltage detection range: DC 4.0-35V

Includes:

  • (1) ER3C-i Receiver
  • (1) Manual
  • (1) Voltage telemetry wire

Reviews5.0 · 1 review

Young KimVerified owneron RadioMaster ER3Ci Express ELRS 3-Channel 2.4GHz Receiver

Item as described, so far this is my number one receiver.

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