The FrSky RB-35S is a professional-grade redundancy bus designed to provide maximum reliability and safety for high-value RC aircraft. Combining triple receiver redundancy, dual power input, dual configurable BEC outputs, advanced telemetry and the integrated ADV Stabilisation System, the RB-35S is the ultimate power and signal management solution for demanding fixed-wing aircraft, turbines, scale models and UAV applications.

Designed for pilots who require exceptional flight safety, the RB-35S automatically manages multiple receivers and redundant power sources to ensure uninterrupted operation, even in the event of receiver or power supply failure.

Featuring 24 configurable output channels, automatic FBUS, SBUS and S.Port recognition, high-precision telemetry sensors, Black Box data logging and independent dual BEC outputs, the RB-35S offers unmatched flexibility for complex aircraft installations.

The integrated ADV Stabiliser expands upon FrSky's traditional gyro stabilisation with configurable output mapping, advanced flight modes and programmable features, delivering smooth, precise aircraft control in a wide range of flying conditions.

Key Features

• Triple receiver redundancy for maximum signal security
  
• Dual XT30 power inputs with automatic redundancy
  
• Selectable Balance or Backup power modes
  
• Built-in ADV Advanced Stabilisation System
  
• High-precision altitude and vertical speed telemetry
  
• Dual independently configurable BEC outputs (5V–8.4V)
  
• Up to 24 configurable output channels
  
• Automatic FBUS, SBUS and S.Port recognition
  
• Overload protection on every output channel
  
• Current monitoring on Channels 1–9
  
• Built-in power switch compatibility (NFC, Pin Plug and more)
  
• Black Box flight data recording
  
• Supports external LED status indication
  
• Ideal for large and complex RC aircraft
  
• XT30 battery and BEC connections

Perfect For

• Large-scale RC aircraft
  
• Turbine jets
  
• Giant scale aerobatic models
  
• Scale aircraft
  
• UAV platforms
  
• Professional RC pilots
  
• Competition aircraft
  
• High-value model aircraft
  
• Models requiring receiver redundancy
  
• Aircraft requiring advanced stabilisation

Product Summary

The FrSky RB-35S is a premium redundancy bus designed to maximise flight safety through triple receiver redundancy, dual redundant power inputs and integrated advanced stabilisation. With configurable dual BEC outputs, 24 channel support, intelligent telemetry and comprehensive protection features, it is the ideal solution for complex, high-performance RC aircraft.

Specifications

• Model: RB-35S
  
• Receiver Redundancy: Triple Receiver
  
• Power Input: Dual XT30
  
• Power Modes: Balance / Backup
  
• Configurable Channels: 24
  
• Signal Types: PWM, FBUS, SBUS Out, S.Port
  
• Receiver Inputs: 3
  
• Built-in Stabilisation: ADV Advanced Stabiliser
  
• Telemetry Sensors: Altitude, Vertical Speed and System Monitoring
  
• Dual BEC Outputs: 5V–8.4V Adjustable
  
• Continuous BEC Output: 2 × 15A
  
• Current Detection: Channels 1–9
  
• Overload Protection: All Channels
  
• Black Box Logging: Yes
  
• Battery Voltage Range: DC 7.4–26V (Recommended 3S–6S LiPo)
  
• Operating Current: 200mA @ 12V
  
• Operating Temperature: -20°C to 75°C
  
• Connectors: XT30
  
• Dimensions: 114.4 × 73.4 × 18.7mm
  
• Weight: 99g

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