Flysky FS2A 4CH Receiver

The Flysky FS2A is a compact 4-channel receiver module designed for remote control applications in RC aircraft, drones, and ground vehicles, operating on the 2.4GHz frequency band with AFHDS spread spectrum technology. Professional hobbyists and commercial RC operators rely on this receiver for its reliable signal reception, low latency response, and compatibility with Flysky transmitters in both indoor and outdoor environments. This receiver solves the critical challenge of maintaining stable, interference-free control signals across variable distances and electromagnetic noise conditions typical in RC operations.

Product Overview

The Flysky FS2A receiver operates on advanced AFHDS (Automatic Frequency Hopping Digital System) technology, which automatically switches between 50 different frequency channels to avoid interference from WiFi, Bluetooth, and other 2.4GHz devices. This spread spectrum approach provides superior signal stability and range compared to fixed-frequency receivers. The receiver features a compact form factor measuring approximately 35x22x12mm, making it ideal for space-constrained applications in small aircraft and quadcopter frames. With a typical operating range of 200+ meters in open space, the FS2A delivers consistent performance for both line-of-sight and extended-range flying operations.

The receiver integrates four independent PWM output channels with 1000-2000 microsecond pulse width modulation signals, allowing direct connection to servo motors, ESCs (Electronic Speed Controllers), and other actuators without additional signal conditioning. The 5V operating voltage requirement is typically sourced from the flight battery through a BEC (Battery Elimination Circuit) or dedicated power module. The receiver's binding process is straightforward: hold the bind button on the receiver while powering it, then activate bind mode on your Flysky transmitter to establish secure pairing. This one-time binding ensures only your transmitter can control your aircraft, preventing accidental interference from nearby operators.

Key Specifications

Specification	Details
Product Type	4-Channel Radio Control Receiver
Brand	Flysky
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Operating Frequency	2.4GHz AFHDS Spread Spectrum
Number of Channels	4 Independent PWM Channels
Operating Voltage	5V DC (typical range 4.5V-6V)
Signal Output	PWM 1000-2000 microseconds
Operating Range	200+ meters line-of-sight
Dimensions	35mm x 22mm x 12mm

Key Features

• AFHDS Technology: Automatic frequency hopping across 50 channels eliminates interference from WiFi, Bluetooth, and competing RC systems operating in the same 2.4GHz band
• 4 Independent PWM Channels: Direct servo and ESC control without additional signal processing or mixing hardware required
• Extended Operating Range: 200+ meters transmission distance in open environments with clear line-of-sight, suitable for large-scale aircraft and long-distance FPV applications
• Compact Design: Lightweight 9-gram module fits easily into fuselages and airframes with minimal space constraints and negligible weight penalty
• Simple Binding Protocol: One-time secure pairing between receiver and transmitter prevents signal hijacking and simplifies multi-aircraft operations
• Low Latency Response: Sub-50 millisecond signal transmission ensures responsive control feel critical for aerobatic flying and precision maneuvers

Applications and Use Cases

• Fixed-Wing RC Aircraft: Ideal for control of ailerons, elevator, rudder, and throttle channels in small to medium-sized RC planes with stable, interference-free signal transmission
• Quadcopter and Multirotor Drones: Powers flight control systems requiring four simultaneous channels for throttle, roll, pitch, and yaw control with minimal latency
• RC Ground Vehicles: Enables steering, throttle, and auxiliary channel control for RC cars, trucks, and rovers in both indoor racing and outdoor terrain navigation
• FPV Racing Drones: Provides the rapid response and signal stability demanded by competitive FPV pilots operating in high-interference environments with multiple simultaneous aircraft
• Robotic Systems: Powers control of robotic arms, gimbals, and camera pan-tilt systems requiring independent PWM channel control with reliable signal reception
• Educational RC Projects: Simplifies learning RC electronics and flight control principles with straightforward binding and standard PWM interface familiar to hobbyists

How to Use

Begin by connecting the receiver to your power source through the red (5V positive) and black (ground) wires, typically sourced from your flight battery's BEC or a dedicated 5V regulator. The four signal output wires (typically white or yellow) connect directly to your servo motors or ESC devices, with each channel controlling one actuator. Before your first flight, you must bind the receiver to your transmitter: power on the receiver while holding its bind button, then activate bind mode on your Flysky transmitter (usually a dedicated bind button or menu option). The receiver's LED will flash during binding and stabilize once pairing is complete, indicating successful synchronization.

After binding, perform a range check by walking away from your aircraft with the transmitter while monitoring control response, ensuring smooth servo movement at 100+ meters distance. Always verify that all control surfaces move in the correct direction before flying; if any channel responds inversely, use your transmitter's channel reverse function to correct it. Keep the receiver away from high-current power lines and metal structures during operation, as these can degrade signal quality. For storage, keep the receiver in a dry environment and avoid exposing it to extreme temperatures or humidity, which can damage the internal circuitry.

Frequently Asked Questions

Is the Flysky FS2A compatible with all Flysky transmitters?

The FS2A is compatible with most Flysky 2.4GHz transmitters including the FS-i6, FS-i10, FS-T6, and FS-i4. However, it is not compatible with older Flysky 35MHz or 72MHz transmitters. Always verify your transmitter model supports AFHDS 2.4GHz operation before purchasing. If you have an older transmitter, you may need to upgrade to a newer Flysky model or consider alternative receiver options.

What is the difference between the FS2A and other Flysky receivers like FS2A-6CH?

The FS2A provides 4 independent PWM output channels suitable for basic aircraft control. The FS2A-6CH variant offers 6 channels, providing additional control options for complex aircraft with retractable landing gear, flaps, or multiple auxiliary devices. Choose the FS2A for simple applications like basic RC planes and drones, and upgrade to 6-channel variants if you need more simultaneous control functions.

Can I use multiple FS2A receivers simultaneously in the same location?

Yes, the AFHDS frequency hopping technology allows multiple FS2A receivers to operate simultaneously in the same area without interference, as long as each is bound to a different transmitter. The automatic frequency hopping ensures that even if two receivers momentarily operate on the same channel, they quickly hop to different frequencies. This makes the FS2A ideal for multi-pilot events and training scenarios where several aircraft operate in proximity.

What voltage range can the FS2A safely handle?

The FS2A is rated for 5V nominal operation with a safe operating range of 4.5V to 6V. Operating below 4.5V may cause signal instability or receiver shutdown, while exceeding 6V risks permanent damage to internal components. Always use a regulated 5V power source or BEC rated for your total system current draw. If powering from a higher voltage battery, ensure your BEC or regulator provides stable 5V output with adequate current capacity for the receiver and connected servos.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy Flysky FS2A 4CH Receiver Online in India

Purchase the Flysky FS2A 4CH Receiver online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Flysky FS2A 4CH Receiver with fast shipping and expert support.

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