Failsafe is that the car shuts down, if radio signal is lossed.
Remember, I'm NOT a GP racer, so I cant tell you the value of this feature. I just headr that some people are very happy with it. With my EP cars, I've never needed it....
Schumacher Mi5 - Sanwa MT-4 / RX-462 / KO Propo PDS-2123 - Nosram 5600 X-treme Saddle Pack - LRP SPX Zero/X12 17,5 - Nosram Stealth Touch Evolution - MAAS SPS 9250