The 850 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 a single 850nm source installed, and can be easily upgraded to include a 1300nm source. 

The source is simple to operate with a single switch controlling power and selecting the output wavelength.  LED indicators highlight the selected source and verify that battery power is sufficient to maintain the calibrated output power.