is the reed switch legal?

[Lloyd Burns]

Here is the part of the message pertaining to reed switches: (*+*+*+*+*+* mine)

> If I want to count the teeth on a sprocket with an IR sensor is
> there any approved sensor I can place outside of the custom box to
> do this, if so can it be connected to either the first controller
> or a custom circuit? If not is the gear allowed to enter the custom
> box so an IR device could count the teeth?

A) If it is outside the box, then it must be one of the supplied
sensors.

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You may also purchase switches per the Additional Hardware List, such as non-contact reed switches that work with permanent magnets,
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and use those anywhere on the robot. Alternately, the gear
may be extended into the custom circuit enclosure in order to be
measured with sensors located inside the box.