This is a Failsafe device to stop damage occuring to your car and to property when it loses connection with the controller.

If connection is lost (or the controller is switched off) the failsafe will close the throttle and apply the brake bringing the car to a stop.

It is fitted inline between the Throttle Servo and the Reciever. 

Fail safe to suit all nitro & petrol powered vehicles, helps prevent runaway vehicles (boats, cars etc) due to signal loss & low battery.


Specs:
1. Weight: 6g 
2. Working volts: 4.8V-6V
3. Loading current: 7mA(4.8V)
4. Precision scope: <0.3%
5. Dimension: 37mm x 21mm x 9mm


Features:
Low battery warning.
Prevents accidents by detection low battery voltage, low radio battery voltage, no radio signal, and signal interference.


Stops vehicle by applying brake servo.


Compatible with 4.8V-6V receiver power source.


Requires: Connect fail-safe unit to throttle/brake servo and receiver.


(note If you have a 2.4Ghz Reciever which has a built in failsafe already - this will not work. If in doubt, please ask)


Auxiliary safety device that constantly checks the pulse signal from the receiver by means of a CPU and turns on a fail safe (F/S) function if the pulse is disturbed by interference. When the power supply voltage drops, or a battery fail is detected. (B-F/S) function.


Compact and lightweight design does not affect servo performance.


Responds quickly to erroneous operation by interference, etc, and prevents loss of control of R/C models. Quick recall function quickly resets the F/S function and restores normal servo output signal from the receiver when the interference, etc. disappears.



Fail-Safe Setup


1. Connect the fail-safe unit between the throttle/brake servo and receiver. (In series) Be sure to observe the polarity of the wire leads.


2. Connect to transmitter power. Turn on transmitter, and now you'll see Fail Safe green LED light. It indicates that the input signal is good to the servo which is connected the Fail Safe.


3. On the controller, set the servo to the desoired failsafe position. (ie Brake on) Then press and hold the Fail Safe Input signal button on the Fail Safe. Release when red LED flashes 3 times. This indicates the Fail Safe has recorded the signal.


4.Turn off transmitter power, and now you,ll see the FS green LED turn off, while red LED is flashing, Servo is moving to the preset position.

5. Turn the Transmitter back on. Fail Safe green LED is comes back on and the servo will move as normal.

Setup is done, you can operate your vehicle as normal.







Buy With Confidence from RCScrapyard:

With over 40 years of hands-on experience in Radio Control, we know RC inside and out - from classic Nitro-powered vehicles to the latest high-performance Electric models.

We're proud to be Authorised Tamiya and Kyosho Dealers, supplying genuine parts, kits and accessories direct from official channels. Every order is carefully checked, securely packaged, and dispatched using insured and trackable delivery.

RCScrapyard is the winner of the 2025 eBay for Business *Pioneer Business* Award, recognising excellence in customer service, product knowledge, and trusted expertise.

Whether you're buying your first model or adding to a lifelong collection, you can buy with complete confidence - our commitment to quality, honesty, and after-sales support comes as standard with every purchase!

Please Note:

Packaged items are sold on a 30 day return basis, and returns will be accepted provided the packaging is unopened.  

Used or second-hand spares are sold as seen, and are non returnable.

Please feel free to ask any questions, I will endeavour to answer them promptly both before and after the sale.