Radiomaster ER8GV 8CH PWM CRSF ExpressLRS Receiver For Fixed-wing Aircraft Gliders

Key Features

• Dual-Antenna Design — The receiver uses a dual-antenna setup with telemetry power up to 100mw, and both the ER8G and ER8GV versions share this design.
• 8-Channel PWM Output — The receiver supports 8 PWM channels for servo outputs.
• Built-In Vario Sensor — The ER8GV version includes a built-in high-precision air pressure sensor (Vario).
• Automatic Voltage Telemetry — Telemetry reports external battery voltage or the built-in receiver voltage, switching between the two inputs automatically.
• Wi-Fi Updates and WEBUI — Firmware updates and configuration can run over Wi-Fi through the WEBUI interface.

Product Specifications

• Model: Radiomaster ER8GV
• Output channel: 8CH PWM
• Wireless protocol: ExpressLRS 3.3.0 pre-installed
• Telemetry power: maximum 100mw (LUA Adjustable)
• Power: DC 3.5 - 8.4V
• External Battery voltage detection range: DC 4.0 - 35V
• Antenna type: 20cm high sensitivity antenna
• Material: Composite Material
• Dimensions: 60 × 13.5 × 13 mm (2.36 × 0.53 × 0.51 in)
• Weight: 12 g (0.42 oz)
• Age Range: 14+y

What It Is / How It Works

This ExpressLRS receiver is designed for fixed-wing aircraft and gliders and is based on the ExpressLRS system. Receivers in this category pass control signals from a transmitter to the servos on a model, and their telemetry lets the pilot monitor voltage data from the transmitter.

Who It's For / Use Cases

Glider and fixed-wing pilots who want a compact receiver with several servo outputs and telemetry are the typical buyers for this type of unit. Pilots whose competitions ban variometers, or who simply do not need one, may prefer a receiver without the built-in sensor.

How to Use / Care

1. Power the receiver from a 1S LiPo receiver battery, which the product description lists for both the ER8G and ER8GV.
2. Choose the version that fits your build: the ER8G has the same functionality as the ER8GV without the built-in Vario, which suits competitions that prohibit Vario.
3. Use the receiver with ExpressLRS 3.3.0, which is pre-installed on the unit.

How to Choose

Start with whether you need a built-in Vario sensor, since the ER8G and ER8GV differ on that point. Next, check that your flight battery setup falls within the listed voltage detection range in Product Specifications. Finally, count the servo outputs your model needs and confirm the 20cm antenna suits your airframe layout.

Frequently Asked Questions

Does this receiver include a battery?
No. Batteries are not included, and the unit runs from a DC 3.5 - 8.4V power input listed in Product Specifications.

Which version has the Vario sensor?
The ER8GV has a built-in high-precision air pressure sensor (Vario). The ER8G uses the same functionality without that sensor, so it suits competitions that prohibit Vario.

How many servos can it drive?
The receiver can drive up to 8 servos and supports 8 PWM channels, with a compact and slim design for glider pilots.

Is the telemetry power adjustable?
Telemetry power reaches a maximum of 100mw and is adjustable through LUA.

How does voltage telemetry choose the input?
The receiver detects which voltage input to use automatically, and only one voltage input can be used at any given time. The external battery detection range is DC 4.0 - 35V.