The Dual OWL 850 is a handheld light source that is compact and affordable. 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 an intuitive 2-button interface; One button controls power, and the other selects the output wavelength. LED indicators highlight the selected source, while the battery level indicator verifies that there is sufficient battery power to maintain the calibrated output power. The unit has an extended battery life, running up to 30 hrs on one 9 volt battery. The Dual OWL 850 is Nist traceable, and is available with ST or SC connectors