RadioMaster ER6 2.4GHz ELRS PWM Receiver

Short Description:

RadioMaster ER6 2.4GHz ExpressLRS receiver with six PWM outputs, dual 20cm antennas, up to 100mW telemetry power, and DC 4.5-8.4V input for fixed-wing RC aircraft.

Product Name: RadioMaster ER6 2.4GHz ELRS PWM Receiver
Product Type: 6-Channel ExpressLRS PWM Receiver
Frequency Range: 2.4 GHz
Channels: 6 PWM Channels
Telemetry Power: Up to 100 mW, LUA adjustable
Input Voltage: DC 4.5-8.4 V
Receiver Protocol: ExpressLRS 2.4 GHz; ExpressLRS 3.3.0 pre-installed
Dimensions: 43 × 25 × 15 mm
Antenna Type: Dual 20 cm high-sensitivity antennas
External Battery Voltage Detection: DC 4.0-35 V

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Product Detail

FAQ

Technical Highlights

Six PWM Outputs for RC Aircraft

The ER6 provides six PWM channels for connecting servos and other compatible PWM-controlled equipment. It is a 2.4 GHz ExpressLRS radio receiver, not an FPV video transmitter.

Dual-Antenna ExpressLRS Link

Two 20 cm high-sensitivity antennas support the receiver's 2.4 GHz ExpressLRS link. ExpressLRS 3.3.0 is pre-installed, and receiver telemetry power is adjustable up to a maximum of 100 mW through LUA.

Receiver and Flight-Battery Voltage Telemetry

The ER6 can report receiver voltage or an externally measured flight-battery voltage and automatically detect which voltage input to use. The external battery voltage detection range is DC 4.0-35 V; receiver supply voltage is DC 4.5-8.4 V.

Flexible Configuration and Expansion

Wi-Fi updates and WebUI configuration are supported. The receiver also provides a reserved four-pin CRSF interface for telemetry-sensor expansion, while the published serial output options are CRSF and SBUS.

RF and Control Specifications

Model	RadioMaster ER6
Product Type	2.4 GHz ExpressLRS PWM receiver
PWM Outputs	6 channels
Wireless Protocol	ExpressLRS; version 3.3.0 pre-installed
Telemetry Power	Maximum 100 mW, LUA adjustable
Antenna	Dual 20 cm high-sensitivity antennas
Serial Output	CRSF / SBUS
Expansion Interface	Reserved four-pin CRSF interface

Electrical and Physical Specifications

Receiver Power Supply	DC 4.5-8.4 V
External Battery Voltage Detection	DC 4.0-35 V; sensing range only, not receiver supply voltage
Connector Pitch	2.54 mm
Dimensions	43 × 25 × 15 mm
Weight	14.5 g

Integration Notes

Use a compatible 2.4 GHz ExpressLRS transmitter or transmitter module.
Supply the receiver within its DC 4.5-8.4 V operating range. Do not apply the external battery sensing voltage to the receiver power input.
Confirm servo connections, channel assignments, serial-output settings, and antenna placement before operation.

FAQ

Is the RadioMaster ER6 a video transmitter?

No. The ER6 is a 2.4 GHz ExpressLRS radio receiver with six PWM outputs. Its stated maximum 100 mW power refers to receiver telemetry, not FPV video transmission.

How many PWM channels does the ER6 provide?

It provides six PWM output channels for suitable RC equipment, including servos.

What voltage can power the receiver?

The receiver power-supply range is DC 4.5-8.4 V. The separate DC 4.0-35 V specification is the external battery voltage detection range and must not be treated as the receiver supply range.

Does the ER6 support serial interfaces?

RadioMaster lists CRSF and SBUS serial output options and a reserved four-pin CRSF interface for telemetry-sensor expansion.

Can the receiver firmware and settings be updated?

Yes. RadioMaster specifies Wi-Fi updates and WebUI configuration. ExpressLRS 3.3.0 is pre-installed on the listed ER6 configuration.