Overview
The FrSky TANDEM X20RS is an ETHOS-based RC radio transmitter featuring a built-in TD-ISRM Pro dual-band internal RF module (900M/2.4G) and MC20R CNC Hall-sensor gimbals with travel-angle adjustment for outdoor RC operation scenarios. It supports multiple RF modes/protocols, including TD, TW, ACCESS (2.4G and R9), and ACCST D16, and offers up to 24 channels.
Compared with the original X20 design, the X20R/X20RS form factor updates include a PRO-style bottom hand grip, an adjusted Lite-type external module bay for easier fitment of different module shapes, two extra trims, and adjustable-center side slider levers. Primary inputs (trim caps, center-slider caps, and knobs) use CNC metal caps.
For service and setup support, contact https://rcdrone.top/ or email support@rcdrone.top.
Key Features
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Built-in TD-ISRM Pro dual-band internal RF module (900M/2.4G) with operating combinations including:
– 900M/2.4G Dual Band TD Mode
– Dual 2.4G TW Mode
– ACCESS 2.4G & ACCESS R9 Modes
– 2.4G ACCST D16 Mode - Dual 2.4G TW mode supports simultaneous operation under TW and ACCESS R9 modes with the same module; TW and ACCESS R9 receivers can be connected via SBUS IN/OUT for redundant backup
- Upgraded robust antenna handle; includes two external antenna connectors for 2.4G and 900M antennas when working under LoRa modes
- 800 x 480 outdoor high-brightness touchscreen
- 2 angle-adjustable slider levers
- 2 knobs; 4 standard trims plus 2 extra trims
- 6 quick-mode custom buttons (front) and 2 momentary buttons (rear)
- All knobs, trims, and central linear-slider with all-CNC metal caps
- Built-in 8GB flash drive storage
- Text to Speech (TTS) function (ENG & CHN language only)
- Digital audio power amplifier
- Built-in 6-axis gyroscope sensor
- High-speed PARA wireless training system
- Data transmission and recharge system via USB Type-C interface
- Haptic vibration alerts and voice speech outputs
- Dual-side haptic gimbal feedback (left/right vibration can be configured independently)
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MC20R all-CNC high-precision Hall-sensor gimbals with 10 ball bearings, plus:
– Easy travel adjustment to any desired position from 45° to 60°
– 8° rotatable panel
– Travel position adjustment via a 1.5mm hexagon screwdriver through the gimbal-panel adjustment hole (no radio casing disassembly required)
Specifications
| Dimensions (L*W*H) | 205*213*90mm |
| Weight | 892g (battery excl.) / 1024g (battery incl.) |
| Operating system | ETHOS |
| Internal RF module | TD-ISRM Pro |
| Number of channels | Up to 24 |
| Built-in flash storage | 8GB |
| Operating voltage range | 6.5 ~ 8.4V (2S Li-battery) |
| Operating temperature | -10°C to 60°C (14°F to 140°F) |
| Operating current | 600mA @ 7.4V (typ.) |
| Charging current | <=1A ±200mA |
| Recharge system | For 2S Li-ion battery (USB Type-C interface) |
| USB adaptor voltage | 5V + 0.2V |
| USB adaptor current | >2.0A |
| Backlit touch LCD resolution | 800*480 |
| Receiver compatibility | ACCST D16 & ACCESS & TD & TW receivers |
| External module bay | Lite Type External Module Bay |
Applications
- RC pilots needing dual-band 900M/2.4G control and telemetry with compatible FrSky receivers (ACCST D16, ACCESS, TD, TW)
- Outdoor operation scenarios requiring adjustable travel-angle gimbals and configurable haptic/voice alerts
Details

ETHOS-based TANDEM X20RS highlights include the TD-ISRM Pro dual-band 900M/2.4G module and MC20R CNC Hall-sensor gimbals with 45–60° travel adjustment.
