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Item #:
91754982
Speedybee RadioMaster ER4 ELRS PWM Receiver: 2.4GHz 4Ch ExpressLRS Receiver Nano Module for RC Vehicles
Item #:
91754982
LAK 773635
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Order now and get it around Sunday, August 23
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Experience high performance and ultra-long range with the compact RadioMaster ER4 PWM receiver, perfect for small models without compromising on reliability.
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What Stands Out
Advanced ELRS Technology
Utilizes ExpressLRS for ultra-low latency and high refresh rates, ensuring seamless control and responsiveness for RC enthusiasts in competitive scenarios.
Compact Design
The nano module form factor allows for easy integration into various RC vehicles, saving space and reducing weight without compromising performance.
4 Channel Capability
Offers four channels of control, providing flexibility in managing multiple functions and enhancing the overall user experience for diverse RC applications.
Product Details
| Special Features | ExpressLRS Communication Protocol |
| Connectivity Technology | Wi Fi |
| Control Type | Remote Control |
| Wireless Communication Technology | Radio Frequency, Wi-Fi |
| Brand Name | SPEEDY BEE |
| Model Name | ER4 2.4GHz ELRS PWM Receiver |
| Included Components | ELRS |
| Unit Count | 1 Count |
| Manufacturer | speedy bee |
| Part Number | 2306-RM-ER4-2 |
| Brand | SPEEDY BEE |
| Special Feature | ExpressLRS Communication Protocol |
| Number of Items | 1 |
| Item Weight | 0.1 lbs (50 grams) |
Who Should Buy?
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RC Hobbyists
Perfect for enthusiasts looking to enhance their RC vehicle performance with a reliable PWM receiver system.
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Drone Builders
Ideal for drone builders seeking a compact, efficient receiver for their custom RC projects.
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Budget Users
Great for users on a budget wanting quality features without overspending on more advanced receivers.
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Professional Racers
May not meet the high-frequency demands and advanced features required by competitive RC racing professionals.
Product Description
Speedybee RadioMaster ER4 ELRS PWM Receiver: 2.4GHz 4Ch ExpressLRS Receiver Nano Module for RC Vehicles
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the Speedybee RadioMaster ER4 ELRS PWM Receiver used for?
Answer: The Speedybee RadioMaster ER4 ELRS PWM Receiver is designed for use in radio-controlled vehicles, allowing for reliable transmission and reception of control signals. This 2.4GHz receiver ensures low latency and high precision, essential for competitive racing and recreational flying. It's particularly favored in drone racing and RC car applications, where every millisecond counts. Users benefit from enhanced responsiveness and greater control over their vehicles, leading to an improved user experience. -
Question:
How does the ExpressLRS technology enhance this receiver's performance?
Answer: ExpressLRS technology boosts performance by providing higher frame rates, longer range, and reduced latency compared to traditional control systems. With its open-source nature, users can customize their setups to fit specific requirements. The Speedybee RadioMaster ER4 operates efficiently even in noisy environments, ensuring signal integrity. This makes it ideal for competitive users who demand maximum efficiency from their control systems, allowing for a smoother, lag-free operation. -
Question:
What types of RC vehicles can the ER4 receiver be used with?
Answer: The Speedybee RadioMaster ER4 receiver is compatible with a wide range of RC vehicles, including drones, cars, boats, and airplanes. Its versatile design ensures it can be integrated easily into various models. Whether you're racing drones or maneuvering RC cars at high speeds, this receiver can handle diverse applications, making it a suitable choice for hobbyists and professional racers alike. -
Question:
Can I use multiple receivers with one transmitter when using Speedybee ER4?
Answer: Yes, you can use multiple Speedybee RadioMaster ER4 receivers with a single transmitter, provided that the transmitter supports it. This allows you to control several RC vehicles simultaneously or to have backup receivers on hand. Just ensure each receiver is individually bound to the transmitter. This feature is especially useful for multi-vehicle setups in competitive environments, maximizing your versatility and performance. -
Question:
What is the installation process for the Speedybee ER4 receiver?
Answer: Installing the Speedybee RadioMaster ER4 receiver involves connecting the receiver to your vehicle's flight controller or electronic speed control (ESC) via PWM outputs. The connection is straightforward, typically requiring minimal soldering. Once physically installed, binding it to the transmitter is necessary to ensure communication. This process empowers users to bring their RC vehicles to life quickly and efficiently, enabling rapid deployment for race events. -
Question:
What is the range of the Speedybee ER4 receiver?
Answer: The Speedybee RadioMaster ER4 ELRS receiver offers an impressive operational range that can extend to several kilometers, depending on environmental conditions and obstacles. This long-range capability provides peace of mind for users flying drones or racing cars, ensuring stable connectivity even at significant distances. Maximizing range allows for more daring maneuvers and greater exploration during hobby sessions, enhancing the overall experience. -
Question:
Is the Speedybee RadioMaster ER4 receiver suitable for beginners?
Answer: While the Speedybee RadioMaster ER4 is packed with advanced features, it can also be a great option for beginners who are willing to learn. Users can start with basic configurations and gradually explore advanced settings as they become more comfortable. Its reliable performance allows new users to focus on mastering flying or driving techniques without the worry of signal loss. This dual appeal makes it a versatile choice for both novices and seasoned RC enthusiasts. -
Question:
Does this receiver support telemetry features?
Answer: Yes, the Speedybee RadioMaster ER4 receiver supports telemetry features, providing real-time data transfer about the vehicle's performance back to the transmitter. This includes crucial metrics like battery voltage, signal strength, and reception statuses. Telemetry is invaluable for racers and hobbyists who require immediate feedback to make informed decisions during their sessions, enhancing safety and performance tracking. -
Question:
How do I update the firmware on the Speedybee ER4 receiver?
Answer: Updating the firmware on the Speedybee RadioMaster ER4 receiver is done via a USB connection with compatible software tools provided by the manufacturer. Users need to download the latest firmware from the official website and follow step-by-step instructions for upload. Regular updates can enhance performance, fix bugs, and add new features, which is especially important as technology continues to evolve within the RC ecosystem. -
Question:
Where can I buy Speedybee RadioMaster ER4 ELRS PWM Receiver: 2.4GHz 4Ch ExpressLRS Receiver Nano Module for RC Vehicles in Laos?
Answer: You can purchase the Speedybee RadioMaster ER4 ELRS PWM Receiver from Ubuy in Laos. Ubuy offers a wide range of electronic components and accessories, making it a convenient place to find this advanced receiver. By shopping at Ubuy, you gain access to competitive pricing and reliable service, ensuring that you can enhance your RC experience with trusted products.
SPEEDY BEE Radio Receivers Editorial Review
The Speedybee RadioMaster ER4 ELRS PWM Receiver has garnered attention in the RC community as a compact and reliable solution for enthusiasts seeking to enhance their RC vehicles. Users have praised its lightweight design and the ease with which it can be integrated into various platforms. Setting up the receiver with ExpressLRS technology has been noted as straightforward, allowing users to enjoy the enhanced range and low latency that the system offers. Several reviews highlight the performance and stability of the receiver, particularly in outdoor settings, where its responsiveness is essential for controlling RC cars, drones, and other models. Users also appreciate the module's ability to maintain a solid connection even in challenging environments, affirming its reliability in various scenarios. However, some users have expressed a desire for more detailed initialization instructions, as they found certain features overwhelming initially. A few have mentioned that while setup is generally easy, it can require some technical know-how, particularly for those new to ExpressLRS systems. Overall, the Speedybee RadioMaster ER4 ELRS PWM Receiver is well-received for its performance, ease of use once familiarized, and compact design. It has become a favored choice among RC hobbyists who value reliability and efficiency in their remote control systems. **
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Pros
- Lightweight and compact design
- Easy integration into various RC platforms
- Excellent performance with enhanced range and low latency
- Stable connection in challenging environments
Cons
- Some users find the initial setup instructions lacking
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
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LAK 773635
Order now and get it around Sunday, August 23
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
- Based on the revolutionary ExpressLRS system for superior performance.
- Compact and lightweight design suitable for small aircraft, boats, and cars.
- Supports up to 4 PWM channels, allowing control of multiple servos simultaneously.
- Features automatic voltage telemetry for easy monitoring.
- Supports Wi-Fi updates and WEBUI configuration for seamless usability.
- Includes high quality components like a 15 cm antenna for enhanced sensitivity.
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