snippet: <br/><b>CRL Spectrum Detective Energy Transmission Meter</b> provides? a ?convincing ?test ?to ?show? the ?energy efficiency of ?your ?Insulating ?Glass? units. ??Three ?performance ?values are ?displayed? simultaneously: ?UV ?Energy, Visible? Light, and infrared ?Energy. Simple? to ?operate ?and completely portable, ?it ?requires ?no ?additional light sources ?or ?power cords. Perform LIVE demonstrations of the performance of your Energy Efficient Window Products. Simple, fast and convincing; this instrument will take sales demonstrations to a whole new level! ??Comes ?with a? protective ?Carrying ?Case ?and ?9V ?DC battery.<br/><p>.</p> (Page 1)