Jumper T20S V2 ELRS 2.4/915 EdgeTX Radio Transmitter

Precision control for serious FPV and RC pilots

The Jumper T20S V2 ExpressLRS Radio Transmitter is designed for pilots who demand accurate, consistent control across multirotors, fixed-wing aircraft, helicopters, cars and boats. Running EdgeTX and ExpressLRS, it combines a flexible open-source interface with a fast, long-range control link in both 2.4 GHz and 915 MHz bands. Full-size gimbals with Hall or RDC90 sensors deliver smooth stick feel and precise input tracking, making it suitable for high-speed racing, freestyle flying and detailed line-of-sight work.

At its core, the T20S V2 uses an STM32F407ZGT6 MCU and an internal, EdgeTX-recommended SD storage solution. The 1.3" OLED screen (128×64) provides clear menus and telemetry readouts in a compact layout. The transmitter operates from 6-8.4 V and is powered by two 21700 cells housed in a large battery tray, giving extended session time. A reserved external module interface (1.25 mm 5-pin) and XT30 power output allow you to support external RF modules and accessories when needed.

The gimbal assembly is a standard full-size format with optional Hall or RDC90 sensors, giving a consistent feel and long service life. The central function area places key controls within easy reach, while an assisted throttle channel and metal CNC wheel support fine adjustments in flight or on the ground. An external cooling fan helps maintain stable performance when running higher ExpressLRS output levels, and the omnidirectional foldable antenna is designed to maintain a reliable signal in varied orientations.

Additional usability features include reserved trim buttons for flexible configuration, customizable six-button layout for quick mode or profile switching, and an anti-slip rear pad for a secure grip during extended sessions. The transmitter shell and faceplate have been refined for comfortable handling and clear access to switches and controls, supporting both thumb and pinch flying styles.

Why It's a Smart Choice

• ExpressLRS link with dual-band capability supports low-latency, long-range control for racing, freestyle and long-distance missions.
• Full-size Hall/RDC90 sensor gimbals provide smooth, consistent stick response suitable for precise maneuvers.
• EdgeTX firmware offers a configurable interface, advanced mixing and model management for multi-platform RC use.

FAQ

Q: Which models can I control with the T20S V2?
A: It is suitable for FPV racing drones, freestyle quads, fixed‑wing airplanes, helicopters, RC cars and boats, as long as they are equipped with compatible ExpressLRS or supported external RF systems.

Q: Does it support both 2.4 GHz and 915 MHz ExpressLRS?
A: Yes. The radio is designed for ExpressLRS operation in 2.4 GHz and 915 MHz bands when used with the appropriate internal or external ELRS hardware configuration.

Q: What power source does the transmitter use?
A: The T20S V2 uses two 21700 Li-ion cells (not included) and operates in a 6-8.4 V range, providing extended runtime for long flying or driving sessions.

Q: Can I customize switches and buttons?
A: Yes. EdgeTX allows flexible mapping of switches, trims and the six customizable buttons, so you can assign arming, flight modes, rates, timers and other functions to match your workflow.

Q: Is there support for external RF modules?
A: A reserved external module interface and XT30 power output are provided, allowing you to integrate compatible external RF modules or accessories if your setup requires them.