GIXCEL Flysky FGr4S V2 Receiver – 4-Channel AFHDS 3 for NB4/NB4+ Transmitters

Overview

The GIXCEL Flysky FGr4S V2 Receiver is a purpose-built four-channel module designed to work seamlessly with the Flysky Noble NB4 family. Its small footprint (25.5 mm by 22 mm by 17.3 mm) and a light 5.1 g mass help keep your model’s balance tidy, whether you are tuning a nimble RC car, a compact speedboat, or a small RC plane platform. The single integrated antenna and straightforward binding experience aim to reduce setup friction so you can focus on your driving or cruising experience.

Versatile data outputs for flexible builds

The FGr4S V2 supports multiple data formats, including PPM, i-BUS, S.BUS and PWM. This versatility makes it a good fit for various controllers, servos, and telemetry configurations, allowing you to design a control system that matches your project’s needs without swapping hardware. In practice, you can choose the protocol that best aligns with your flight controller or receiver stack.

• AFHDS 3 technology provides adaptive frequency hopping to help maintain a stable link in environments with potential interference.
• The built-in antenna design simplifies installation and minimizes extra cabling, which can help with space-constrained layouts.
• Lightweight construction helps preserve handling characteristics for smaller models and reduces the load on your airframe.
• Two-way transmission capabilities may provide transmitter-side feedback about receiver status and input latency, depending on the paired system.

Performance, range, and real-world use

While the product specification lists a ground-range figure greater than 200 meters, real-world results depend on terrain, line of sight, and local regulations. The FGr4S V2 is well-suited to mid-range hobby scenarios, enabling confident control in open spaces and while guarding against unexpected disturbances in cluttered environments.

Power, status indicators, and software updates

Designed for flexible power inputs, the receiver accepts 3.5 to 8.4 volts from common RC power rails. A small LED indicator provides a quick status signal during binding and operation. The ability to update the firmware online helps you take advantage of future refinements without replacing hardware.

• Compact two-way package with a built-in antenna keeps the install neat and unobtrusive.
• Minimal weight helps you maintain performance and flight characteristics on smaller models.

Compatibility and practical use cases

Compatibility covers Flysky Noble NB4, NB4+, NB4 PRO, NB4 PRO+, and NB4 Lite transmitters. The four channels support straightforward steering, throttle, and auxiliary control schemes, which makes it a practical upgrade path for hobbyists assembling or upgrading RC cars, boats, or small multi-rotor layouts where a reliable link matters.

What’s in the box and binding guide

The package includes the Flysky FGr4S V2 Receiver and a binding workflow that is repeatable and easy to follow. The steps emphasize safety and proper power sequencing to ensure a clean bind, with notes on status indicators that help you confirm a successful pairing.