> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # 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. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10637:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE10637:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## 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)