SKU: 50818336854

FrSky RB-25 - Redundancy Bus

Sale price$72.00 Regular price$80.00
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

FrSky RB-25 - Redundancy BusThe RB 25 RB 25S builds on the success of the previous trusted Redundancy Bus Series by adding new advanced features combined with a compact new design which meets the needs of users who want a flight safe system built in a smaller size unit. Triple Receiver Redundancy & Dual Power Input RB 25 RB 25S has been designed to offer both dual power and triple receiver redundancy. This provides the user triple receiver signal and telemetry redundancy by

The RB-25/RB-25S builds on the success of the previous trusted Redundancy Bus Series by adding new advanced features combined with a compact new design which meets the needs of users who want a flight-safe system built in a smaller size unit.

Triple Receiver Redundancy & Dual Power Input
RB-25/RB-25S has been designed to offer both dual-power and triple-receiver redundancy. This provides the user triple receiver signal and telemetry redundancy by adding multiplex ports (RX1-3 IN / S.Port). Dual-power provides a safe and efficient way to power the system with your power sources connected via a pair of standard XT30 connections. The dual-power consumption system is designed to operate in balance mode, where it consumes the power line from either power sources depending on which has the higher voltage.

Diversified Sensor Telemetry
The RB-25/RB-25S also works as an extensive sensor module with various built-in sensors including diversified telemetry. The RB-25S also includes the high-precision telemetry sensor for monitoring altitude, vertical speed, etc. can be also used as an alternative to using a GR or S series receiver.

Power Switch Function
The built-in power switch function draws the support of using multiple types of external switches (e.g. NFC switch, Pin Plug, etc.) that enables flexible options on how the power can be switched on/off without the need to plug/unplug the battery connections.

Features

  • Dual Power Balancing Consumption
  • Triple Receiver Redundant Guarantee
  • RX In | FBUS/SBUS/S.Port Auto Recognization
    (Note: Only the S.Port on the RX1 channel port can be used to upgrade firmware.)
  • Built-in Advanced Stabilization Functions
  • Built-in Power Switch Function | Match with Different External Switches (Optional)
  • Supports External LED Indication
  • Compatible with FBUS/S.Port Products
Specifications
  • Dimension: 53*40*16mm (L*W*H)
  • Weight: 25.6g
  • Number of Channel Ports: 18 (PWM/FBUS/S.Port/SBUS Out)
  • 3 RX Input Ports & 1 LED Indicator Port
  • Operating Voltage: 4-10V (Recommend 2S Li batteries)
  • Operating Current: ≤185mA@5V / Continuous Current: ≤30A
  • Operating Temperature: -20°C~75°C
  • Power Input Connector: XT30
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50818336854

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Nick Hinman
Dallas, US
★★★★★ 5
Great
Format: Spiral-bound
If you are working in EMS and you don't have this in your kit, you need to rethink your choices. This has tons of information that is quicker to find than an app. This is my 9th or 10th one in my career. Good information to have.
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Reviewed in the United States on November 24, 2025
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Alex
Chelsea, US
★★★★★ 5
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Wife likes it
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Reviewed in the United States on November 13, 2025
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Missy Evans
Port Orchard, US
★★★★★ 5
Great Reference
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great reference guide
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Reviewed in the United States on May 24, 2025
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Courtney Stevens
Chelsea, US
★★★★★ 1
Poor quality messed up printing
Format: Spiral-bound, Format: Spiral-bound
Multiple pages that are printed wrong and you can’t read definitely would not recommend!
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Reviewed in the United States on May 2, 2025
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Ellen
Grantham, US
★★★★★ 5
Just perfect
Format: Paperback
Get this for nursing school, you won’t regret it
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Reviewed in the United States on April 26, 2026

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