RADIOMASTER ER8 2.4GHz ELRS PWM Receiver
200 AED
- ExpressLRS 2.4GHz provides fast and reliable radio control.
- Eight PWM Channels support up to eight servos.
- Dual-Antenna Diversity improves signal reliability and coverage.
- 100mW Telemetry Power is adjustable through the LUA script.
- Voltage Telemetry monitors receiver or flight-battery voltage.
- CRSF and SBUS Outputs support flexible system integration.
- Wi-Fi Updates enable convenient firmware and WebUI configuration.
- 4.5–8.4V Input supports common receiver power systems.
- Compact Molded Housing protects the internal electronics.
- Approx. 16.5g Weight suits aircraft and RC applications.
| Weight | 16.5 kg |
|---|---|
| Dimensions | 43 × 30 × 15 cm |
| Brand | Radiomaster |
| Weight | 16.5 g |
| Output | 8CH PWM; CRSF / SBUS |
| Telemetry | Up to 100mW; receiver and external battery voltage detection 4.0–35V |
| Protocol & Compatibility | ExpressLRS 2.4GHz; compatible with 2.4GHz ELRS transmitters and modules |
Description
📡 Product Overview
RadioMaster ER8 2.4GHz ELRS PWM Receiver is an eight-channel receiver designed for fixed-wing aircraft and other RC models that use conventional PWM servos. It combines the responsive ExpressLRS control protocol with dual antennas, adjustable telemetry power, battery-voltage monitoring, and a durable moulded enclosure.
Alongside its eight PWM outputs, the ER8 provides CRSF and SBUS serial outputs. A separate four-wire CRSF interface supports compatible telemetry sensors and additional system expansion.
⚡ Key Features
- Eight PWM Channels
Directly controls up to eight compatible servos or other PWM devices. - ExpressLRS 2.4GHz
Provides a responsive control link with configurable settings and telemetry support. - Dual High-Sensitivity Antennas
Uses two 20cm antennas for improved signal reception when correctly positioned in the model. - Up to 100mW Telemetry Power
Telemetry output power can be adjusted through a compatible ExpressLRS Lua script. - Receiver and Flight-Battery Telemetry
Can report receiver supply voltage or external flight-battery voltage and automatically detect the available voltage input. - CRSF and SBUS Serial Outputs
Supports connection to compatible flight controllers, stabilization systems, and other serial equipment. - CRSF Expansion Port
Includes a reserved four-pin CRSF interface for compatible telemetry sensors. - Wi-Fi Updates and WebUI
Supports wireless ExpressLRS firmware updates and browser-based configuration. - Standard 2.54mm Connections
Uses familiar servo-style connectors for straightforward installation. - Durable Moulded Case
A one-piece enclosure helps protect the receiver electronics during installation and everyday RC use.
📦 Technical Specifications
- Brand
RadioMaster - Model
ER8 - Receiver Protocol
ExpressLRS 2.4GHz - Preinstalled ExpressLRS Version
ExpressLRS 3.3.0 - PWM Outputs
8 channels - Serial Outputs
CRSF and SBUS - Bus Interface
CRSF - Receiver Supply Voltage
DC 4.5–8.4V - External Battery Voltage Detection
DC 4.0–35V
- Telemetry Power
Up to 100mW, Lua-adjustable - Antenna Type
Dual 20cm high-sensitivity antennas - Dimensions
43 × 30 × 15mm - Weight
Approximately 16.5g - Firmware Category
RadioMaster 2.4GHz - Firmware Target
RadioMaster ER8 2.4GHz Diversity+8xPWM RX
Important: The receiver power input accepts only 4.5–8.4V. Its separate telemetry input can measure an external flight battery between 4.0V and 35V. Never connect a higher-voltage flight battery directly to the receiver’s normal power pins.
✈️ Ideal Use Cases
- Fixed-wing RC aircraft
- Scale aircraft with multiple servos
- Powered gliders
- Models requiring up to eight PWM channels
- ELRS aircraft requiring battery-voltage telemetry
- Compatible systems using CRSF or SBUS output
📦 Package Includes
- 1 × RadioMaster ER8 2.4GHz ELRS PWM Receiver
- 1 × Type-B Voltage Telemetry Wire
- 1 × CRSF Wire
- 1 × ELRS Receiver-to-SBUS Wire
- 1 × User Card
❓ Frequently Asked Questions
How many PWM channels does the ER8 provide?
It provides eight PWM outputs for compatible servos and other PWM-controlled equipment.
Does it work with an ELRS 900MHz transmitter?
No. The ER8 operates on 2.4GHz and requires a compatible 2.4GHz ExpressLRS transmitter or module.
Does the standard ER8 include a variometer?
No. The standard ER8 does not include a barometric variometer. Do not confuse it with the separately available ER8GV.
Can it measure flight-battery voltage?
Yes. Using the included Type-B telemetry wire, it can measure an external battery voltage between 4.0V and 35V.
Can the receiver be powered directly from a 6S battery?
No. Its normal input accepts 4.5–8.4V. A suitable regulated BEC is required with higher-voltage flight batteries.
Does it support CRSF and SBUS?
Yes. The ER8 provides CRSF and SBUS serial output in addition to its eight PWM channels.
Can its firmware be updated wirelessly?
Yes. It supports ExpressLRS Wi-Fi updates and WebUI configuration.
Is it compatible with every RadioMaster transmitter?
It requires a transmitter with internal 2.4GHz ExpressLRS or a compatible external 2.4GHz ELRS module. A transmitter with only a multi-protocol module cannot connect without adding an ELRS module.
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Shipping & Delivery
Shipping Information
- Dubai Deliveries: Free one-day delivery within Dubai on business days, with an option for cash on delivery.
- UAE Deliveries: Free delivery within 2-3 business days across the UAE.
- International Deliveries: Shipping to GCC countries, the Middle East, and Africa is available upon prior arrangement with our support team due to varying import regulations. Customs, clearance fees, and taxes are the buyer's responsibility. For international shipping of additional accessories, all shipping costs, customs duties, and related fees will also be borne by the buyer.
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