[Elecraft] Re: K3 push buttons

[wayne burdick]

Ted,

The K3's front panel switches do provide positive tactile feedback, via 
integral polydomes. The material we selected is rated for extended 
lifetime (many decades, in this application), and the silver contacts 
are fully sealed. As for the printed legends, they're protected by a 
matte silicone hardcoat that's impossible to rub off.

In addition to the tactile feedback, we provide visual and audible 
confirmation of every switch closure.

73,
Wayne
N6KR

---

http://www.elecraft.com