A:
I received your inquiry through the Question and Answer Feature of Staples.com and I apologize for I was unable to answer you directly. I believe this may be a question that the manufacture will have to research further, please feel free to contact the mfg at: www.cyberascotics.com or call Cyber Acoustics directly at (360) 823-4100.
Answered on 4/22/2011 by Laura B from Staples