REK-O-KUT LOW NOISE SWITCH RATTLE
Problem Reported
The "problem" is identified as a rattle coming from inside the switch's case when it is shaken.
Solution
Do not be alarmed. The case is fastened together with what are called "pop" rivets. Occasionally, this can leave a tiny portion of the rivet insertion material inside the case. It cannot get into any component to cause any failure whatsoever, and is considered a normal product of the manufacturing process. . The only time the rattle can be identified is when the product is shaken.