# FlySky FS-iA4B Receiver

**Type:** Product page · **SKU:** CE10454 · **Brand:** [FlySky](https://core-electronics.com.au/brands/flysky-australia)
**Page:** https://core-electronics.com.au/flysky-fx-ia4b-pwm-receiver.html ([markdown](https://core-electronics.com.au/flysky-fx-ia4b-pwm-receiver.html.md))

Maintain a rock-solid 2.4GHz link and monitor real-time telemetry. This AFHDS 2A unit supports PWM and PPM with 4 channels and i-BUS/S.BUS.

> ⚠ Deal is for shelf stock only — any additional stock will be at the normal price.

## Pricing

- **Price:** $25.76 (inc GST) — $23.42 AUD, exc GST

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 21 today; more stock is typically available with a 14–21 day lead time.

## Restrictions

**For use in Australia**

- Operate only in bands and with settings that are permitted for your location and application. Check this product’s supported frequencies in the description/specs.
- If you intend to operate outside shared/licence‑exempt conditions (e.g. in other bands, at higher power, with high‑gain antennas, or extended duty cycles), you must have the appropriate authorisation.
 
**For use in other regions**

- Follow the spectrum rules for your country/region and select frequencies and settings accordingly.

A declaration of use will need to be submitted during checkout.

## Description

The FlySky FS-iA4B is a compact, high-performance 4-channel receiver engineered for bi-directional communication using the advanced AFHDS 2A protocol. Designed to provide a rock-solid link between your transmitter and your RC vehicle, it serves as the critical communication hub for cars, boats, and small-scale aircraft.

Navigating crowded RF environments can lead to signal dropouts and catastrophic control loss; the FS-iA4B solves this by utilising automatic frequency hopping across 140 bands to maintain a clean connection. Furthermore, it eliminates the "blind flying" problem by supporting real-time telemetry, allowing you to monitor vital system data before a battery failure or range issue occurs.

Built with a focus on versatility, this receiver features a hardened casing and voltage support up to 8.4V, allowing it to be powered directly from a 2S LiPo without an external BEC. As an authentic FlySky OEM component, it ensures native compatibility and superior signal sensitivity compared to third-party clones, making it a reliable choice for both hobbyist builds and competitive racing.

We stock [the FlySky FS-i6](https://core-electronics.com.au/flysky-fs-i6-remote-control.html) - a community-loved AFHDS 2A controller used in a wide variety of projects (that is compatible with this receiver).

### Features

- **Streamline your build with serial support:** Utilise the integrated i-BUS and S.BUS ports to send up to 16 channels over a single cable, reducing wiring clutter and simplifying connections to modern flight controllers and robotics platforms.
- **Protect your hardware with real-time telemetry:** Stay informed of your model's health via bi-directional communication that sends data backhaul (such as receiver voltage) directly to your transmitter screen.
- **Operate with confidence in high-interference areas:** Benefit from the AFHDS 2A (Second Generation Automatic Frequency Hopping Digital System) which identifies and switches to the clearest frequency in milliseconds to prevent signal jamming.
- **Simplify your power system:** Drive the receiver directly from a variety of power sources thanks to the wide 4.0V to 8.4V input range, perfect for high-voltage (HV) servo setups.
- **Ensure long-range reliability:** Achieve consistent control at significant distances with a high-gain 150mm antenna and a class-leading -105dBm sensitivity rating.
- **Peace of mind with OEM quality:** As an official FlySky part, this unit offers guaranteed firmware stability and hardware precision that generic "compatible" receivers often lack.
 
### Specifications

 | Property | Specification |
|---|---|
| **Channels** | 4 (PWM), up to 16 (i-BUS) |
| **RF Protocol** | AFHDS 2A (2.4GHz) |
| **Frequency Range** | 2.4055 – 2.475 GHz |
| **Input Voltage** | 4.0V – 8.4V DC |
| **Sensitivity** | -105 dBm |
| **Data Output** | PWM, PPM, i-BUS, S.BUS |
| **Antenna Length** | 150 mm |
| **Dimensions** | 35.4 x 29.6 x 13 mm |
| **Weight** | 10g |
| **Compatibility** | FlySky FS-i4, [i6](https://core-electronics.com.au/flysky-fs-i6-remote-control.html), i10, iT4S, and similar AFHDS 2A Transmitters |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce10454-flysky-fs-ia4b-radio-control-system.jpg)