Single-Output Family Series of Desk-Top Power Supplies. GT-21148 Features Include: Class I Protective Ground or Class II Double-Enforced Insulation, Output Voltages from: 3.3V to 48V in 0.1V increment up to 30W of Regulated Output Power, Built-in O.C. / S.C., O.V. and Thermal Protection. Designs Accepts Universal Inputs from 90-264Vac 47-63Hz and are Enclosed in an Impact Resistant Non-Vented Polycarbonate Case 103 x 50 x 32 (mm). Meets Safety Agency Requirements: UL1950, CSA 22.2#950, TUV EN60950 and Complies with EMI/RFI Regulations, EMC Directives for CE and FCC Class B, for Grounded or Non-Grounded ITE Applications. All Models carry UL/cUL, TUV logo's, with CE-Mark Report generated by independent Certified Laboratory. Modified and Custom Designs are Also Available. Made in USA option available upon request.