+ 2 on the AT IBEC, one of the advantages of the AT IBEC is that if the channel it is on has fail safe then you can set it to fail safe to kill the ignition to stop the engine then the radio will be telling the IBEC to stop the engine when there is a lost of radio link for more then two seconds, I'm not sure if the other kill switches like the Rcxel can do that, I have one on my twin cylinder with a 7 chl Futaba, this receiver only has fail safe on the throttle chl, for that reason I make sure I can kill the engine with a switch via the radio then the radio can kill the engine if it looses the link.