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- RadioMaster ER4 2.4GHz ELRS PWM Receiver
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Item #:
211220681
RadioMaster ER4 2.4GHz ELRS PWM Receiver
Item #:
211220681
USD 33
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Tuesday, July 28
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The ER4 PWM receiver can drive 4 servos simultaneously, providing flexibility and control for a variety of applications.
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What Stands Out
Extended Range
The RadioMaster ER4 utilizes ELRS technology, offering superior signal strength and an impressive range for reliable long-distance communication in various environments.
Versatile Compatibility
Designed to seamlessly integrate with multiple transmitters and models, the ER4 enables users to switch between devices effortlessly, enhancing operational flexibility for hobbyists and professionals alike.
Compact Design
Featuring a lightweight and compact form factor, the ER4 receiver minimizes additional weight on aircraft, ensuring optimal performance without compromising on battery life or maneuverability.
Product Details
- Supports 4 PWM Channels: The ER4 PWM receiver can drive 4 servos simultaneously, providing flexibility and control for a variety of applications.
- Advanced Features: The receiver supports automatic voltage telemetry of external battery voltage or built-in receiver voltage. It also supports Wi-Fi updates and WEBUI configuration, ensuring your receiver is always up-to-date and easily configurable.
- Revolutionary ExpressLRS System: The ER4 2.4GHz ELRS PWM Receiver is based on the revolutionary ExpressLRS system, offering high performance, high reliability, flexible configuration, fast response speed, and ultra-long range.
- Compact and Lightweight: With its small volume and lightweight design, it is perfect for small aircraft models, ship models, car models, and other models that require a compact receiver without compromising on range.
- High-Quality Components: The ER4 receiver comes with a high sensitivity 15 cm antenna and a high-quality 2.54 mm connector. It also includes heat-shrink tubes and a voltage telemetry wire for easy installation and setup.
| Brand Name | RADIOMASTER |
| Unit Count | 1.0 Count |
| Manufacturer | RADIOMASTER |
| Part Number | RMS-RX-ER4 |
| Brand | RADIOMASTER |
| Number of Items | 1 |
| Item Weight | 0.05 lbs (20 grams) |
Who Should Buy?
-
Drone Enthusiasts
Ideal for drone pilots seeking reliable long-range control and low latency for enhanced flight performance.
-
FPV Racers
Perfect for FPV racing enthusiasts who need quick response times and robust signal strength in competitive environments.
-
Hobbyist Builders
Great for RC hobbyists building custom models, offering versatile programming options and compatibility with various setups.
-
Casual Users
May be overkill for casual users who only need basic remote control without advanced features or long-range capabilities.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What types of models can the ER4 receiver be used with?
Answer: The ER4 receiver is perfect for small aircraft models, ship models, car models, and more. -
Question:
How does the automatic voltage telemetry work?
Answer: It monitors the external battery voltage or the built-in receiver voltage automatically for optimal performance. -
Question:
Can I update the ER4 receiver firmware easily?
Answer: Yes, it supports Wi-Fi updates and has a user-friendly WEBUI configuration.
RADIOMASTER Radio Receivers Editorial Review
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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USD 33
Order now and get it around Tuesday, July 28
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Drives 4 servos simultaneously for enhanced control.
- Supports automatic voltage telemetry for reliable battery monitoring.
- Offers Wi-Fi updates and easy WEBUI configuration.
- Based on the cutting-edge ExpressLRS system for high performance and reliability.
- Compact and lightweight design ideal for various model types.
- Includes high-quality antenna and connectors for easy installation.
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