FrSky RB-20 Redundancy Bus


New product

FrSky 15 channel servo interface with redundancy feature for RX and RX battery with tlelemetry 

More details

1 679,00 Kč tax incl.

Add to wishlist

Data sheet

Model Redundanci Bus
Weight 37g
Size 77x43x22mm
Number of Channels 16CH
Operating Voltage Range 4-8.4V(1~2 Lipos or 4~6 NiMH)
SmartPort Yes
Firmware Upgradable Yes

More info


  • Overload protection on each channel.
  • Dual power dual receiver double guarantee (connect up to 2 batteries and 2 receivers).
  • 50Hz mode if servo outputs (20ms period) of Equal to the input of SBUS cycle.
  • Integrated S.Port telemetry feedbacks (including voltage,current,capacity,overload indication,etc).
  • Servo signal output period settable.
  • High voltage servos supported.
  • Compact size and firmware upgradable.

Overview and Connection:

CH1~CH15 - connect up to 15 servos (PWM)
RX1 S.P - connect to the S.Port of RX1
RX2 S.P - connect to the S.Port of RX2
S.PORT - connect to the S.Port of FrSky products with S.Port
RX1 IN - connect to the SBUS port of the receiver
RX2 IN - connect to the SBUS port of the receiver
BATT 1&BATT 2 - MPX connectors for batteries or BEC connection, supply power for RB-20 and connected receivers

For more information and manual, go to the folder DOWNLOAD