# FlySky FS-i4X 4-Channel AFHDS 2A Remote Control

**Type:** Product page · **SKU:** CE10637 · **Brand:** [FlySky](https://core-electronics.com.au/brands/flysky-australia)
**Page:** https://core-electronics.com.au/flysky-fs-i4x-afhds-2a-controller.html ([markdown](https://core-electronics.com.au/flysky-fs-i4x-afhds-2a-controller.html.md))

Four channels of interference-resistant 2.4GHz control for your first robot, plane, glider or boat.

## Pricing

- **Price:** $49.55 (inc GST) — $45.05 AUD, exc GST

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 30 today; more stock is typically available with a 8–35 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

Four channels of digital proportional 2.4GHz control, priced like a toy radio but built on the same AFHDS 2A protocol that is commonly used. Two gimbals, four trims and a pair of switches send high-resolution stick input to any paired AFHDS 2A receiver, with a long 500–1500m of range within line of sight.

Entry-level radios usually force a compromise: cheap ones drop out in crowded RF environments, or dont offer a clear upgrade path. This one hops across 140 frequencies between a wide range of frequency channels to hold a link in a busy workshop or field, and the four-channel default is a firmware limit rather than a hardware one — the community DIY upgrade path opens it up to ten channels on the same board. Channel reverse and a channel 1/2 mixer are built in, so elevon and V-tail setups are handled quickly on the transmitters switches.

Dual-protocol support means it talks to both AFHDS 2A and original AFHDS receivers, so it drops into an existing FlySky setup without replacing receiver electronics. Bind it to the [FS-iA4B](https://core-electronics.com.au/flysky-fs-ia4b-receiver.html) for a matched 4-channel pair, or the [FS-X14S](https://core-electronics.com.au/flysky-fs-x14s-sbus-transceiver.html) if you want S-Bus out to a flight controller or microcontroller (to a robot!). Four AA cells run it — we suggest [Eneloop NiMHs](https://core-electronics.com.au/panasonic-ni-mh-battery-charger-with-4-eneloop-batteries.html) so it is ready whenever you are.

### Features

- Holds a link in interference-heavy environments, thanks to AFHDS 2A frequency hopping across 140 channels
- Grows from 4 to 10 channels via DIY firmware upgrade — the radio does not become the ceiling on your next build
- Flies elevon and V-tail models straight out of the box with built-in channel reverse and channel 1/2 mixing
- Slots into existing FlySky installs by supporting both AFHDS 2A and legacy AFHDS receivers
- Warns you before a brownout with a low-voltage alarm below 4.2V, and runs a long session on four AA cells (be warned if you use chemistries other than Alkaline!)
 
### Specifications

 | Property | Specification |
|---|---|
| Channels | 4 default, expandable to 10 |
| Protocol | AFHDS 2A (AFHDS compatible) |
| Frequency | 2.4GHz — 2.4055 to 2.475GHz, 140 channels |
| Transmission power | <20dBm |
| Range | 500–1500m (with line of sight) |
| Stick mode | Mode 2 (left-hand throttle), convertible to Mode 1 |
| Antenna | Single, omnidirectional |
| Data/Trainer port | PS/2 (PPM) |
| Power | 4x AA cells (not included) |
| Low voltage alarm | <4.2V |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce10637-fs-i4x.jpg)