> **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-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. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10454:1` (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/CE10454:1.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 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)