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FlySky FS-iA4B Receiver

SKU: CE10454

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.

$30.30 AUD, inc GST

$27.55 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 17th of Feb

Quantity Discounts:

10+ $26.45 (exc GST)
25+ $25.62 (exc GST)

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.

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 - 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, i10, iT4S, and similar AFHDS 2A Transmitters

This product is listed in:

Breakouts & Modules>Remote Control
Wireless>General RF>Radio Control (RC)
Robotics>Controllers and Communication Systems

Product Comments

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Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

40 Aruma Place
Cardiff
NSW, 2285
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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