FrSky DUAL 2.4GHz TW MX Receiver
The FrSky TW MX is the ultra-compact Twin (TW) protocol receiver running two simultaneous 2.4GHz links. The MX form factor puts the full TW dual-2.4GHz system — active-active dual-band, 4 PWM channels, SBUS Out, SBUS In, S.Port, Inverted S.Port, and FBUS — onto a near-stamp-sized 25x21x4mm board weighing just 7.1g. Both 2.4GHz links operate as part of the TW RF system simultaneously, using FSK and LoRa, to provide RF redundancy, interference resistance, and robust control performance. For small, weight-sensitive airframes running an X14 or X-Lite S radio, the TW MX is the natural choice.
Why We Recommend This
The TW MX is the compact TW-protocol receiver for tight builds — full TW dual-2.4GHz RF system coverage in a near-stamp-sized package, ideal for pilots using a TW-capable FrSky RF system where weight and space are critical. FPV Builds RC provides U.S.-based product support, receiver-selection assistance, and setup guidance for FrSky products purchased through our store.
Frequently Asked Questions:Which FrSky transmitters are compatible with the TW MX?
This receiver requires a FrSky transmitter or RF module capable of operating the TW (Twin) protocol. Compatible options include FrSky TWIN-series transmitters (X14, X14S, X14RS, X-Lite S) with native TW support, TW-capable Tandem/RS-series transmitters such as supported X18RS and X20R/X20RS configurations, and compatible ETHOS transmitters equipped with the FrSky TWIN Lite Pro external RF module. Compatibility depends on the transmitter's RF hardware, selected RF protocol, module support, and compatible firmware. Browse all options at https://www.fpvbuildsrc.com/frsky-receivers
What makes the TW MX different from larger TW receivers?
The TW MX is the smallest receiver in the TW lineup — at 25x21x4mm and 7.1g, it fits in micro and small-scale aircraft where every gram and millimeter counts. You still get the full TW dual-2.4GHz system plus 4 PWM channels, SBUS Out, SBUS In, S.Port, Inverted S.Port, and FBUS — everything the full-size receiver offers in a near-stamp-sized package.
What is the TW (Twin) dual-2.4GHz protocol?
TW (Twin) uses two simultaneous 2.4GHz RF links utilizing FSK and LoRa. Both links operate as part of the TW RF system to provide RF redundancy, interference resistance, and robust control performance — without needing a 900MHz antenna, keeping your installation clean and compact.
How do I use FBUS for telemetry on the TW MX?
Assign the FBUS/S.Port port to FBUS mode in your transmitter's ETHOS settings. Connect your ADV sensors (FAS, GPS, VARI) or Neuron ESC. FBUS carries bidirectional data on a single wire — sensor readings stream live to your radio screen with no hub needed. Browse compatible sensors at https://www.fpvbuildsrc.com/frsky-sensors
Does the TW MX support OTA firmware updates?
Yes. Where supported by the receiver and RF system, FrSky OTA functionality allows compatible receiver firmware operations through a compatible FrSky transmitter/RF system. Ensure the transmitter RF firmware and receiver firmware are compatible and follow the current FrSky/ETHOS firmware procedure for this receiver.
Does FPV Builds RC offer setup support for the TW MX?
Yes — we're a U.S.-based FrSky dealer happy to help with binding and FBUS setup. Browse our full FrSky receiver range at https://www.fpvbuildsrc.com/frsky-receivers
