FrSky TWIN X-Lite S
DUAL 2.4G RADIO SYSTEM
The TWIN X Lite S is a powerful radio system that features dual 2.4G frequencies simultaneously on the same receiver in TW mode. The TW active-active protocol is different from the general active-standby redundancy solutions, with this protocol, dual 2.4G frequency bands are active on the TWIN series RF module and receiver at the same time. It has two 2.4G internal RF antennas mounted to provide multi-directional and wider coverage for transmitting signals compared to a single antenna design. Taking advantage of these features, the TWIN system can provide less latency and higher reliability at a faster data rate with confidence.
 
In addition to the TW mode, TWIN X Lite S also supports ACCST D16, ACCESS, and ELRS 2.4G (Compatible) modes, this means users can benefit from a wide range of compatible receiver options to choose from and bind to when building the RC model.
 
SLIDE SCREEN & UPGRADED ERGONOMIC COMPACT DESIGN
The Twin X Lite S size and shape have been designed to make the radio compact, lightweight, and easy to carry. It adopts a 3.5-inch color touch slide screen, the sliding function saves space and ensures the comfort of using other functional trims, buttons, etc. By sliding out the screen, the hidden foldable tab will be exposed and can be used to attach the strap or other potentially more flexible uses. In addition, TWIN X Lite S provides a high-brightness matte touch screen, which greatly enhances the visibility of users in strong outdoor sunlight.
 
The power button and 4 standard trims (for adjusting gimbal sticks) are positioned under the screen. The TWIN X Lite S includes an additional 2 trims and 4 customizable buttons placed in a convenient location on the radio panel for real-time and frequent operation. For example, when flying an RC glider, you can use the extra trims to adjust the angle of the flaps/surface to adapt to the real-time air environment. The momentary buttons, sliders, and switches on the top are easier to reach. In addition, the momentary buttons have been redesigned and improved to withstand larger pressure, and the button cap areas are now more comfortable to press.
 
GYROSCOPE SENSOR
With the integrated 6-axis sensor unit, users can use the TWIN X Lite S as a motion-sensing controller to control the inputs of a model during flight or use it to point a camera in the desired direction.
 
BUILT-IN MASS STORAGE & BATTERY CAPACITY
In order to save the user the trouble of deciding the storage capacity, TWIN X Lite S comes with 512MB built-in flash storage that offers plenty of file storage to meet all of your radio’s storage needs. The radio has an accessible battery bay and USB Type-C charging interface. Battery inclusion and capacity depend on the specific retail package; verify the supplied configuration before ordering.
 
 
Why We Recommend This
The Twin X-Lite S is the compact entry point to dual-2.4GHz TW coverage in a game-controller form factor — perfect for FPV pilots or anyone who wants TW frequency diversity in a pocket-sized radio. It's also the only transmitter in this size class with a Lite module bay for adding the Twin Lite Pro RF module. FPV Builds RC provides U.S.-based product support, transmitter-setup assistance, and configuration guidance for FrSky radios purchased through our store.
Frequently Asked Questions:
Which receivers are compatible with the Twin X-Lite S?
The X-Lite S uses the TW (Twin) dual 2.4GHz protocol. Compatible TW receivers include the TW R10, TWSR8, TW R8, TW R6, and TW MX. Receiver compatibility depends on the selected internal or external RF mode and firmware. Match the transmitter RF mode to the receiver protocol and consult the FrSky ETHOS RF System documentation before binding. For added protocol flexibility, a TW external module (Twin Lite Pro) can be used in the module bay. Browse the full receiver lineup: https://www.fpvbuildsrc.com/frsky-receivers
What is the TW (Twin) protocol and how does it differ from Tandem?
TW runs two independent 2.4GHz links simultaneously using active-active diversity — both links are live at all times and the system uses whichever has cleaner signal. Tandem combines 2.4GHz and 900MHz for longer range penetration. TW is optimized for proximity flying, micro FPV, and sport applications where dual 2.4GHz diversity beats 900MHz range extension.
How does the X-Lite S compare to the X14 and X14S?
The X-Lite S is the compact version of the TW radio family — same TW dual 2.4GHz protocol but in a smaller grip-style form factor, ideal for micro and mini quads, simulators, and pilots who prefer a lighter radio. The X14 and X14S are full-size radios with more switch and pot options. Compare the lineup: https://www.fpvbuildsrc.com/frsky-transmitters
What type of battery does the X-Lite S use?
The X-Lite S uses a 2S lithium-ion battery system with a specified operating voltage of 6.5–8.4V. Check the supplied battery and current FrSky manual before ordering replacements; do not assume individual 18650 cells are included.
Does the X-Lite S have an external module bay?
Yes — a lite-format module bay. You can add the FrSky Twin Lite Pro module or other compatible lite-format modules for expanded protocol support or additional TW capability.
What firmware/OS does the X-Lite S run?
ETHOS OS — FrSky's color touchscreen operating system with OTA receiver firmware updates and full mixer logic.
Does FPV Builds RC offer support for X-Lite S setup?
Yes — we're a U.S.-based FrSky dealer happy to help with receiver pairing and ETHOS configuration. Contact us anytime.