The HWS comes with a limited lifetime warranty and was a first in the industry when announced in 2008. The highly reliable 300, 600, 1000 and 1500W fan cooled models form part of a very broad HWS product offering ranging from 3.3V to 60V outputs. A 1-6V program input (on select models) can adjust the output from 20-120% of nominal for applications requiring non-standard voltages. Certifications include IEC/EN/UL 60950-1 and UL 508 (most HWS300, 600 models)