FUTABA FDLS-1 Instruction Manual Download Page 1

FDLS-1

Dual RX Link system

How to Use 

How to Use 

LED Indication

LED Indication

Precautions

Precautions

1. 

Install two receivers on the aircraft as shown 

in the wiring diagram on the next page.

2. 

Link the two receivers using the dual receiver 

feature of the transmitter.

     For systems without dual receiver capability, 

link each receiver in turn.

WARNING 

Failure to follow these safety precautions may 

result in severe injury to yourself and others.

In order to prevent any short circuits, 

please observe the polarity of all 

connections.

Ensure that the unit is connected 

properly to the receiver.  

If the connector is disconnected during 

flight, it becomes inoperable.

Ensure that the unit is mounted in an 

area that will eliminate exposure to 

fuel, water and vibration.

As with any electronic components, prop-

er precautions are urged to prolong the life 

and increase the performance of the unit. 

Allow a slight amount of slack in the 

unit cables and fasten them at a 

suitable location to prevent any damage 

from vibration during flight.

Be sure to link the two receivers with 

the transmitter.

It will not work unless the two receivers 

are linked. After startup, even if the link on 

one side is disconnected, the other side will 

continue to operate normally.

Used in a set of Futaba S.BUS / S.BUS2 

systems.

Do not supply receiver power from 

the ESC. When using the receiver 

power supply type ESC, remove the red 

(+) cord of the 3ch wiring from the ESC 

so that the power is not supplied from 

the ESC.

Use a dedicated battery to power the 

receiver / servo.

Don't mount FDLS-1 away from  

magnetic bodies.

To  ensure  that  the  FDLS-1  is 

functioning as desired, please test 

accordingly.

Do not fly until inspection is complete.

Before the flight, disconnect the 

wiring of the main receiver from 

the FDLS-1 that is operating normally, 

and check if the sub receiver alone can 

control it.

Check if the FDLS-1 switches.

Do  not  use  the  FDLS-1  with 

anything other than an R/C model.

   

1M23N37402

LED

Transmitter in link mode

Transmitter in link mode

For FASSTest 18CH Select 

dual mode and link primary

*Follow the link procedure 

for each receiver manual.

For FASSTest 18CH Select dual 

mode and link secondary

Turn on the main 

receiver and link

Turn on the sub 

receiver and link

Main RX

Sub RX

Works with the 

main receiver

Trouble occurred in the 

main receiver !!

FDLS-1 automatically 

switches to sub-receiver

Switch to the main receiver 

when communication is 

recovered

Appllcable systems

S.BUS/S.BUS2 receiver

*Except for cars

Install two receivers 

in one fuselage.

FDLS-1

 is a secure system. In the event of 

trouble with the main receiver, the 

FDLS-1

 

will automatically switch to the sub receiver 

and fly safely.

Thank you for purchasing the FDLS-1. Before us-

ing your new FDLD-1, please read this manual thor-

oughly and use the FDLD-1 properly and safely. 

After reading this manual, store it in a safe place.

Instruction Manual

Use : 

Two receivers communication 

switching device

Length : 

225 mm (8.9") 

Weight : 

6.5 g (0.2 oz)

Operating voltage :

 DC3.7 V to 7.4 V

          (Acceptable: DC3.5 V to 8.4 V)

Green 1 blink

Main Rx operation

Green 2 blinks

Sub Rx operation

Red

No signal reception

Green/Red 

Alternate blink Unrecoverable error

◆ About telemetry system

When using the dual receiver function

・The telemetry function of the main receiver 

can be used

・Sub-receiver telemetry function is not available

Other than dual receiver function

・Telemetry not available

・Set telemetry to INH (disabled)

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