Save your model from crashing with this fail safe in the event of loss of radio signal or low battery the fail safe will automatically switch the throttle servo (or steering servo if you chose) back to its preset positon like brake or to lower the revs on the engine saving you ££ off crashes. Designed by Hi Speed suitable for use on all nitro and petrol cars. Simple follow the below instructions to install.. To set up the fail safe. 1) Put the servo you wish to connect (throttle servo) connection into the the fail safe (opposite wire connection). 2) Put the fail safe connection lead into the servo port of the receiver (where the throttle servo lead usually goes). 3) Turn everything on and move the throttle servo to the spot where you want it go when it runs out of power/lose signal (using the remote). 4) Push the little button to save. 5) All Done! Please ensure you test it by switching of the remote before you begin use it will return the throttle servo to the preset position. Images copyrighted by BlackSmith Products Ltd.