RadioMaster Ranger SBUS Wireless Trainer Module

The RadioMaster Ranger SBUS Wireless Trainer Module replaces traditional tethered buddy-box cables, allowing you to link master and student radios wirelessly. Designed to slot directly into the external bay of the master transmitter, this module takes the SBUS output of a receiver bound to the student radio and feeds that control signal to the master via the external module pins. It provides a completely tether-free setup for FPV instructors, drone clubs, and pilots guiding beginners through their first flights.

Key features

• Enables a wireless trainer connection between master and student RC transmitters

• Feeds the SBUS protocol directly into the master radio's external bay pins

• Draws operating power straight from the master radio without external batteries

• Available in standard Micro (JR) or Nano module form factors

• Works with any receiver that has a 5 V SBUS output, e.g. an ELRS receiver for ELRS student radios or an R81 V2 for 4-in-1/CC2500 radios

Specifications

• Manufacturer: RadioMaster

• Output protocol: SBUS

• Supported bays: Micro (JR) or Nano (dependent on variant)

• Compatible radios (Micro): TX16S, Boxer

• Compatible radios (Nano): GX12, Zorro, Pocket, MT12 (not TX12 MKII)

• Working voltage: 5.0-8.4 V DC

• Receiver output voltage: 5.0 V DC

• Suggested receivers: RP1, RP2, R81 V2 or any 5 V SBUS receiver

• Weight: 25.1 g (Micro), 18.9 g (Nano)

• Dimensions: 33 x 48.7 x 68 mm (Micro), 26.3 x 71.2 x 42 mm (Nano)

• In the box: Trainer module, GH1.25 3-pin receiver cable (receiver not included)

To operate, plug the module into the master transmitter's external bay, connect an SBUS receiver bound to the student radio, and configure your master radio's trainer settings to accept an SBUS input from the external module.