Product overview
The FLYSKY FS-i4X provides entry-level radio control for fixed-wing aircraft, gliders and boats. Its default configuration has four channels, with DIY expansion supporting up to ten. Channel reversing and mixing provide control-setup functions, while the AFHDS 2A radio protocol also offers AFHDS compatibility. For integration, the transmitter combines a single antenna with a PS/2 data interface carrying PPM. The specified radio frequency is 2.4G, transmit power is below 20 dBm, and channel resolution is 1024.
The black transmitter body measures 174 × 89 × 190 mm and weighs 323 g, defining its physical envelope for handling and storage. Power uses four 1.5 V AA batteries, with a low-voltage alarm below 4.2 V. There is no charging interface, and online updating is unsupported. The specified environmental ranges are 0°C to +60°C and 20%–95% humidity. The FS-i4X is a control transmitter rather than a flight platform or airframe kit; its standard channel configuration is four channels.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | FLYSKY FS-i4X |
| Product type | Entry-level radio-control transmitter |
| Supported models | Fixed-wing aircraft, gliders and boats |
| Channel count | 4–10 channels4 channels by default; expansion requires DIY modification. |
| Default channel configuration | 4 channels |
| Control functions | Channel reversing and mixing |
| Radio frequency | 2.4G |
| Transmit power | Less than 20 dBm |
| Radio protocol | AFHDS 2A |
| Protocol compatibility | Compatible with AFHDS |
| Channel resolution | 1024 |
| Battery configuration | Four 1.5 V AA batteries |
| Charging interface | None |
| Low-voltage alarm threshold | Less than 4.2 V |
| Antenna configuration | Single antenna |
| Data interface | PS/2 (PPM) |
| Temperature range | 0°C to +60°C |
| Humidity range | 20%–95% |
| Online updating | Not supported |
| Color | Black |
| External dimensions | 174 × 89 × 190 mm |
| Body weight | 323 g |
| Certifications and identifier | CE; RCM; FCC ID: N4ZFLYSKYI4 |
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