FYI: Circuit that shuts down your robot when remote control fails

The latest issue of "Everyday Practical Electronics", Vol. 33 - Issue 9, has a circuit you can add to your remote controlled robot (or other) that senses
when the wireless signal fails, and shuts down the unit when this happens. This is to prevent damage due to an "out-of-control" machine.
Thought it might interest some of you.
Robert Oschler /
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