The Jumper T12 2.4Ghz transmitter radio is designed to be compact, lightweight and powerful enough to support a range of aircraft - all straight out of the box.


The Jumper T12 brings the best features of the T8SG v2 series, and bundles them together with JumperTX - an open source firmware set based on the OpenTX Project. Compatible with JR style RF modules, the T12 comes with the JP4-in-1 Multi protocol module as standard.


The T12 version supports Crossfire in CRSF mode with LUA script support, and most importantly WITHOUT any hardware modification for end users. If your looking for the most compact, most affordable and most EPIC Crossfire compatible TX in the market today look no further than the Jumper T12. Jumper state they are committed to supporting OPEN hardware module platforms and will never try to force customers onto proprietary equipment.


The T12 platform is shipped with the JP4-in-1 Multi-protocol module. If you already own JR Modules such as the TBS Crossfire or any other JR Module compatible 2.4ghz, Analogue or Long Range UHF system, the T12 is ready to rock out with its socket out! A standard LCD screen was used along with the T8SG V2 butter smooth V2 gimbals offering quality, usability and best of all affordability


EU compliant JR syle modules can be used to extend the range of aircraft the T12 is able to work with. The standard included multi protocol module includes non-EU LBT firmware; also known as FCC/Universal/International.


A video of binding to an Eachine E010S (FrSKY) can be seen here

Jumper T12 OpenTX Multi-Protocol Radio - JR style Module Bay - Crossfire support

  • Radio Features:

    • JumperTX (open source Firmware set based on the OpenTX Project)
    • JR/FrSKY compatible module bay on rear side
    • USB online firmware upgrade
    • Ultra-low power consumption, longer battery life
    • Channels: up to 16 channel output
    • Open Source Firmware, all channels are fully programmable
    • Wide voltage input (2s lipo recommended)
    • Multilingual menu
    • Vibration reminder function
    • Support telemetry (depending on the receiver)
    • Crossfire CSRF Compatible: Yes
    • LUA Script support: Yes

    Radio Specs:

    • Radio MCU: STM32F205VET6 (512kb)
    • Size: 158 * 150 * 58
    • Weight: 342g (without battery)
    • Working voltage: DC5-DC9V (factory with 4 * AA battery box, 2s Lipo recommended, batteries not included)
    • Firmware: JumperTX (an open source Firmware set based on the OpenTX Project)
    • Channels: up to 16 channel output
    • Display: 1.7-inch LCD display, 128* 64 resolution
    • Gimbal Type: Potentiometer
    • JR/FrSKY compatible module bay on rear side
    • Upgrade method: USB online upgrade
    • Simulator mode: 3.5mm standard ppm output or USB HID
    • Voice support: YES

    Jumper JP4-in-1 Module
    The Jumper JP4IN1 Module features the CC2500, NRF24L01, A7105 and CYRF6936 RF Chip modules all integrated on one board. This module can convert standard PPM signals form module equipped radios in to the RF protocols used by most radios in the market today (See RF Chip data below). This module is plug and play with module equipped radios in the FrSKY series and requires no complex wiring or “hacking” to get running. The module is a great way to improve the enjoyment of your flying experience, using a better radio such as the FrSKY Taranis series rather than the low grade radios commonly included with most kits offers an night and day difference in performance. The Jumper JP4IN1 module is also upgradable via USB input

    JP4-in-1 Specifications:

    • Working voltage: 6-9v
    • Working current: <=100ma
    • Operating frequency: 2.4G ISM band
    • RF power: +22DBM
    • Main control chip: STM32F103CBT6 (128K ROM, 20K RAM)
    • Module bay compatibility: FRSky, Jr and other dimensions: 64*49*33 (without antenna)
    • Net Weight: 42g (including antenna)
    • Software Compatibility: Suitable for radios using OpenTX or er9x/ersky9x
    • Firmware updatable: Yes, via USB.

    RF Chip Data  

    • Cypress Semiconductor CYRF6936: DSM/DSMX, Walkera Devo
    • Texas Instruments CC2500: FrSky, Futaba SFHSS
    • Amiccom A7105: FlySky, FlySky AFHDS2A, Hubsan
    • Nordic Semiconductor NRF24L01: HiSky, Syma, ASSAN and most other Chinese models