• Model: Flysky FS-i4
• Frequency: 2.4GHz (AFHDS 2A)
• Channels: 4CH
• Display: LED indicator
• Low Voltage Warning: Yes
• Power: 4 × AA batteries
• Included Receiver: FS-A6 (6-channel mini receiver)
• Supported Platforms: Fixed-wing aircraft, gliders, helicopters

• 1 × Flysky FS-i4 2.4GHz 4CH transmitter
• 1 × FS-A6 6-channel mini receiver

AA batteries are not included. The FS-A6 is an AFHDS 2A compatible receiver and binds natively with the FS-i4 without additional firmware or hardware.

• AFHDS 2A interference rejection: Second-generation AFHDS frequency hopping provides reliable 2.4GHz link quality in environments where multiple RC systems operate simultaneously — clubs, parks, and school grounds.
• 4-channel simplicity: For fixed-wing trainers, simple gliders, and entry-level helicopters that use aileron, elevator, throttle, and rudder only — a 4-channel system removes the complexity of unused channels and simplifies programming for new pilots.
• FS-A6 mini receiver included: The bundled FS-A6 is a compact 6-channel AFHDS 2A receiver that binds natively with the FS-i4. Its small footprint suits indoor and micro-scale builds where receiver space is limited.
• LED display with low voltage warning: The LED indicator provides clear status feedback and the low voltage warning alerts pilots before battery depletion impacts RF performance — a practical safety feature for new pilots who may not monitor flight time closely.
• 4 × AA battery operation: Standard AA batteries are universally available and easy to replace in the field — no proprietary charging system or LiPo management required.
• Quick bind procedure: AFHDS 2A binding is a simple button-hold process completed in seconds, reducing setup friction for new pilots or when swapping between aircraft.

Q: What does 4-channel mean for this transmitter?
A: The FS-i4 provides 4 independent control channels — typically used for aileron, elevator, throttle, and rudder on a fixed-wing aircraft or for the four primary controls on a helicopter. It is sufficient for most entry-level and trainer aircraft but does not support additional channels for flaps, landing gear, or other auxiliary functions.

Q: What is the FS-A6 receiver?
A: The FS-A6 is a compact 6-channel AFHDS 2A receiver. Although it has 6 channel outputs, only 4 of those channels can be driven by the FS-i4 transmitter. Its compact size makes it well-suited to smaller and lighter aircraft builds.

Q: Can I use the FS-i4 with other Flysky receivers I already own?
A: Yes, if your existing receiver uses the AFHDS 2A protocol. The FS-i4 is not compatible with older first-generation AFHDS receivers or non-Flysky receivers without a third-party protocol module.

Q: Is the FS-i4 suitable for a beginner?
A: Yes. The 4-channel configuration, straightforward LED interface, and quick bind procedure make it a practical entry point for new RC pilots. It is particularly well-suited to trainer aircraft and simple gliders where channel complexity would add unnecessary difficulty.

Q: What batteries does the FS-i4 use?
A: 4 × AA batteries (not included). Standard alkaline or NiMH AA cells are both suitable. The built-in low voltage warning will alert you when replacement is needed.

• Batteries: Remove AA batteries during storage to prevent leakage damage to the transmitter’s battery contacts and internal PCB. Check voltage before each session — the low voltage alert triggers after RF output has begun to degrade on weak cells.
• FS-A6 receiver: Mount the receiver away from ESCs, motors, and battery leads to minimise RF noise. Secure the receiver with foam or tape to protect it from vibration during flight.
• Binding: Re-bind after any receiver replacement or firmware update to ensure a clean link association.
• Storage: Store in a cool, dry location away from direct sunlight and moisture. The LED display and plastic housing can degrade with prolonged UV exposure.

The FS-i4 transmitter and FS-A6 receiver are packed securely for international shipping. Standard tracked international shipping is included. Delivery typically takes 7–21 business days from dispatch depending on destination.

Please inspect the package upon delivery. If any component shows transit damage, contact us within 24 hours with photographs of the packaging and unit.

RC transmitters operating on the 2.4GHz band are subject to import and radio equipment regulations in some jurisdictions. Buyers are responsible for confirming local import compliance. VAT and customs duties beyond prepaid amounts are the responsibility of the customer.