RadioMaster ER8 ExpressLRS (ELRS) 2.4GHz 8 Channel Receiver

Receiver Overview:

This is the ER8 ExpressLRS (ELRS) 2.4GHz 8 Channel Receiver from RadioMaster. Designed for fixed-wing users, this receiver offers exceptional performance with support for eight servos, advanced telemetry features, and a durable one-piece molded shell for enhanced structural strength.

Features:

• Based on the Revolutionary ExpressLRS System
• Supports eight PWM channels with advanced telemetry
• Includes a 4-wire CRSF interface for sensor expansion
• High-performance design with a durable molded shell
• Compatible with all 2.4GHz ExpressLRS modules and transmitters

Specifications:

• Power supply:DC 4.5-8.4V
• Antenna type:20cm high sensitivity antenna
• Weight: 0.58oz (16.5g)
• Size: 1.69×1.18×0.59in (43x30x15mm)

Includes:

• (1) ER8 2.4GHz ELRS PWM Receiver
• (1) Voltage telemetry wire (Type-B)
• (1) CRSF wire
• (1) ELRS- RX- SBUS wire
• (1) User Card

This product was added to our catalog on December 3, 2024

Gabriel B Saturday, Aug 23 2025 (5 weeks ago) RadioMaster ER8 ExpressLRS (ELRS) 2.4GHz 8 Channel Receiver Amazing receiver! Really, really advanced.
I was having range issues on my Arrma Limitless while doing speed runs, so I purchased a RadioMaster Nano and attached it to my existing 4-in-1 RadioMaster MT12. Then I set up the functions I needed on the radio, and I also configured the receiver in the Web UI, which was super easy. The range is extraordinary on just 500mW, and there’s no way I’ll ever need the full watt. When armed, the ELRS TX module dynamically adjusts TX power to keep battery life good. The refresh rate is incredible. You can set your chosen channels up to 400Hz, but to keep it latency free I’d recommend only doing it for steering and maybe throttle. The built in telemetry is nice to have, but it’s not the fastest or most precise. I believe it only supports 8s input however, so you won’t be able to have battery telemetry on 12s unless you use some resistors and calibration.
Note: ELRS was originally designed for FPV and other flying things, so some things don’t really make sense for surface, such as the arming functions. However, the developers are actively improving the setup and making it more compatible with different types of RCs, and I fully expect many gripes to go away over the next few years. View all reviews