RadioMaster ER4 ExpressLRS (ELRS) 2.4GHz 4-Channel Receiver

Receiver Overview:

The RadioMaster ER4 2.4GHz ELRS PWM Receiver offers exceptional performance, reliability, and range in a compact design. Built on the revolutionary ExpressLRS system, this receiver is optimized for small aircraft, boats, cars, and other models requiring lightweight yet powerful functionality. Its innovative features include high-speed response, flexible configuration, and ultra-long-range capability, delivering an unparalleled experience for hobbyists.

With support for four simultaneous PWM channels and voltage telemetry for external or built-in batteries, the ER4 is versatile and easy to use. The receiver’s compact size and lightweight construction make it ideal for both indoor and outdoor models, ensuring optimal performance without compromising on convenience.

Features:

• Based on the Revolutionary ExpressLRS System
• High performance, high reliability, and ultra-long range
• Support for 4 PWM Channels
• Optimized ground-up PCB design
• Automatic voltage telemetry of external or built-in receiver voltage
• Supports Wi-Fi updates and WEBUI configuration
• Compatible with all 2.4GHz ExpressLRS modules and transmitters

Specifications:

• Input Voltage: DC 4.5-8.4V
• Protocol: ExpressLRS 3.3.0
• Channel: 4CH PWM
• Weight: 3g
• Dimensions: 30x15x5mm

Includes:

• (1) ER4 2.4GHz ELRS PWM Receiver
• (2) Heat-shrink tubes
• (1) Voltage telemetry wire (Type-A)
• (1) User card