The Dual OWL is a cost effective, compact, handheld light source.  The temperature compensated outputs are calibrated to couple -20dBm  of optical power into multimode fiber.  The light source is offered with both 850nm and 1300nm sources installed.  

The source is simple to operate with an intuitive 2-button interface.  One button controls power, and the other selects the output wavelength.  LED indicators highlight the selected source and verify that battery power is sufficient to maintain the calibrated output power.