Yes. You also set up the throttle servo so that when you pull the trim all the way back it closes off the butterfly in the carb and this will also kill the engine. So you have two ways to stop the motor. Optionally, you can buy an optical kill switch that connects to the receiver on another channel. This kill switch goes between the battery and the ignition instead of the manual switch. Or you can put both switches between the battery and the ignition (in series) so that you have a manual switch (on the side of the plane) , a transmitter operated switch, and the throttle-closing (via the throttle stick).

And another option is to put a servo on the choke. This way you can close the choke via the transmitter. The engine will not run with the choke all the way closed so this is yet another way to stop the motor. It is nice to have two ways to stop the motor. I like the simple approach -- manual switch on the side of the plane plus throttle closes via throttle stick on transmitter.