Hardware Design
The overall weight of Tandem X20 has been kept low by incorporating the use of light-weight materials while maintaining a strong and robust quality. The radio system comes with an 800 x 480-pixel color touch screen display on the top area of the radio which is easy to read indoors and in direct sunlight outdoors.

The Tandem X20 has been complemented with 6 customizable buttons on the front case that allows for quick switching between features, ideal to be used for flight modes. Additional 2 rear momentary buttons have been introduced to provide flexibility, in the ideal position for DLG pilots launch fingers no matter if you are left or right-handed.  All the trims and pots adopt the CNC metal hardware that makes the radio more endurable.

The two side handle grips of Tandem X20 are made with a high-quality comfortable material, designed ergonomically to fit the hand very well. Both hall-gimbals are well-positioned which makes the sticks very close to the grip edge allowing for ease to reach and control, also the spring tension and the stick travel (45°to 60°) can be adjusted. (S & HD versions support rotating gimbals within adjustable L/R 8°).

2.4G ACCST D16Mode	Compatible with ACCST Receivers with D16 V2 or later FW
2.4G ACCESS Mode	Compatible with ACCESS Receivers	*Capable of simultaneous working under ACCESS mode.
900M ACCESS Mode	Compatible with ACCESS R9 868/915MHz Receivers
2.4G&900M TD Dual-Band Mode	Compatible with TD Dual-Band Receivers

ETHOS, as a thoroughly new operating system, designed from the ground up by RC experts, grants users a powerful, intuitive, and flexible experience that can maximize the fun of RC Hobby!

The X20 tandem has a selection of languages ​​that can be easily changed in the menu.

The languages ​​currently available for ETHOS are:

• German
• English (default)
• French
• Czech
• Chinese

• Built-in TD 900M/2.4G Dual-Band Internal RF Module Supports Multiple Working Modes
• • 2.4G ACCST D16Mode (Compatible with ACCST Receivers with D16 V2 or later FW)
  • 2.4G ACCESS Mode (Compatible with ACCESS Receivers)
  • 900M ACCESS Mode (Compatible with ACCESS R9 868/915MHz Receivers) (*Capable of simultaneous working under ACCESS mode)
  • 2.4G & 900M TD Mode (Compatible with TD Receivers)
• Super-low latency and long-range control with telemetry (*Up to 50 to 100KM range and down to 4ms end-to-end latency)
• 800*480 Color Touch-Screen Displays
• 6 Quick-Mode Custom Buttons (Front) and 2 Momentary Buttons (Rear)
• Lite Type External Module Bay
• Built-in 6-axis Gyroscope Sensor
• All CNC Metal Trims, Knobs
• Haptic Vibration Alerts and Voice Speech Outputs
• Supports SWR Indicator Warning
• Supports Recharge System for 2S Li-ion Battery (USB Type-C Interface)
• High-speed PARA Wireless Training System (Compatible with FreeLink App3.0)
• Built-in Audio Wireless Module (Compatible with Bluetooth Audio Device)
• High-Precision Hall-Sensor Gimbals with All-CNC Metal Panel
• (10 Ball-Bearings, adjustable 45° travel and 8° rotatable for gimbal dial) – S &HD

• ETHOS: The more powerful, Flexible, and Intuitive OS for your radio. 
• • Clear and Intuitive UI Design
  • Supports Dual Operation Modes of Radio Display (Touch and Non-Touch)
  • Supports Multi-Language Switching
  • Hardware/Software Version and Factory Version Detection
  • Supports running LUA Scripts
• Differences between X20 and X20S:
  • Sticks
  • Bluetooth fonction for version X20S

Specifications

• Dimension: 212*200*95 mm (L*W*H)
• Weight: 809g (without battery)
• Operating system: ETHOS
• Internal RF module: TANDEM
• Number of Channels: 16/24 channels
• Operating Voltage Range: 6.5 ~ 8.4V (2S Li-battery)
• Operating Temperature: -10°C~60°C(14°F~140°F)
• Operating Current: 240mA@7.4V (typ.)
• Charging Current: ≤1A ±200mA
• USB Adaptor Voltage: 5V+0.2V
• USB Adaptor Current: >2.0A
• Backlit touchable LCD resolution: 800*480
• Compatibility: ACCST D16 & ACCESS & TD receivers

Box content

• Tandem X20 Transmitter (French available in the micro SD card supplied with the radio) with removable Hand Grip Shell
• Delivered in Mode 2 and adjustable in Mode 1
• 2S LiPo 4000mAh Battery
• Installed SD Card
• Transport Bag
• Neck Strap
• Manual Instructions in English
• Manual Instruction in French (downloadable hereunder)