Dear sir,

I am searching for optical interrupter switch like the one in the following url:
http://www.fairchildsemi.com/ds/H2/H21B6.pdf

But this company has only infrared emittance for the swithc. we need the visible
emittance wavelength light. Does anybody know which company has this kind of
optical switch? Could you send me a email about this? Thank you very much!

Huinan
Huinan Liang
Department of Bioengineering
The Pennsylvania State University
205 Hallowell Building
University Park, PA 16802-6804
U.S.A
Phone:(814)865-6744