HelloRadioSky HR8E 2.4GHz ELRS 9CH PWM Receiver for Fixed-Wing RC Airplane & Boat, Dual Antenna Long-Range Telemetry

Overview

The HelloRadioSky HR8E is a 2.4GHz ELRS PWM receiver designed specifically for fixed-wing RC airplanes and RC boats. Based on the ExpressLRS 3.3.0 long-range system, the HR8E delivers high performance, fast response, and outstanding link reliability. It offers 9-channel PWM output to drive up to 8 servos plus throttle, supports wide DC 4.5–8.4V input, and integrates dual high-sensitivity 200mm antennas for stable long-distance control. Built-in telemetry automatically reports both receiver battery voltage and main flight-pack voltage (DC 4.0–35V), while a 4-wire CRSF port makes it easy to expand with external sensors and flight controllers. Compact (48×27×15mm) and only 11g, the HR8E is an ideal ExpressLRS PWM receiver upgrade for any fixed-wing or marine model.

Key Features

• 2.4GHz ExpressLRS long-range system, pre-flashed with ELRS 3.3.0

• 9-channel PWM output for up to 8 servos plus throttle on fixed-wing or boat models

• High-performance, low-latency link for precise control and fast response

• Dual high-sensitivity diversity antennas (approx. 200mm) for stable long-range reception

• Built-in telemetry with automatic switching between RX battery voltage and main flight-pack voltage

• Telemetry RF power up to 100mW, adjustable via ExpressLRS LUA script on compatible radios

• Wide external battery voltage sensing range: DC 4.0–35V (EXT-BAT input)

• 4-wire CRSF port for sensor input or connection to flight controllers and future expansion

• BOOT button, status LED and UART interface for easy firmware update and configuration

• Specially optimized for fixed-wing users but also suitable for RC boats and other PWM-based models

Specifications

Binding Method (Traditional ExpressLRS Mode)

1. Power on the HR8E receiver; the LED turns on, then power it off.

2. Repeat the above power on/off step two more times.

3. On the third power-up, the LED will flash rapidly twice, indicating that the receiver is in BIND mode.

4. On your ExpressLRS-compatible radio, run the ELRS LUA script (or binding menu) and perform the Bind operation.

5. After a successful bind, the LED will show a solid or normal blink pattern, and the receiver is ready to use.

Telemetry & Voltage Sensing

The HelloRadioSky HR8E supports full voltage telemetry and automatic source switching. It can report the receiver’s own supply voltage as well as the main power-pack voltage via the EXT-BAT input. On OpenTX/EdgeTX or other ELRS-compatible radios, the voltage is shown as RxBt, allowing you to monitor either the RX battery (for example ~6.1V) or the propulsion pack (for example ~16.7V) in real time without extra hardware.

Applications

• Fixed-wing RC airplanes, gliders, warbirds, and EDF jets using PWM servos

• Flying wings and FPV aircraft requiring low-latency ELRS control with PWM outputs

• RC boats and marine models where long-range ExpressLRS 2.4GHz and voltage telemetry are needed

• Projects that need a compact ELRS PWM receiver with CRSF expansion for sensors or flight controllers

With its high performance, flexible configuration, and rich telemetry features, the HelloRadioSky HR8E 2.4GHz ELRS PWM Receiver is a powerful upgrade for any fixed-wing or marine RC model that relies on reliable long-range control.

Details

HelloRadio HR8E 2.4GHz ELRS receivers in multiple colors, designed for easy installation across various models. Features include 9CH PWM output and compact design for RC applications.

Instructions for setting contra-frequency mode on a receiver: power cycle three times, access BIND via EXPRESSLRS LUA, confirm. Light patterns indicate status: slow flash, fast flash, double/triple flash, or solid for connected.

HelloRadio HR8E 2.4GHz ExpressLRS receiver supports 9 channels, including CRSF/S.BUS on CH9. Features BOOT LED, Telemetry, UART ports, and servo outputs CH1–CH8. Operates at 4.5–8.4V.

High sensitivity 1800mm antenna, low resistance 2.54mm header pins, silicone protection against wear and tear for durable HelloRadio receiver usage.

HR8E 915MHz ELRS PWM receiver offers 9CH output, dual 20cm antennas, CRSF interface, and weighs 11g. Supports ExpressLRS 3.3.0, adjustable power, voltage detection—delivering high performance, stability, and flexible RC configuration.