The KM series has been certified to the medical standards of UL 60601-1 and IEC 60601-1 as well as to EN 60950-1 for Information Technology Equipment. Note that the input to output isolation rating is 4,000VAC, which is significantly more than other non-medical products on the market. The units will operate over a wide range of AC input voltages and from 47 to 440Hz, although safety certification only covers 50/60Hz operation. Likewise the units will operate, but have not been certified for operation, with a wide range DC input.