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USB Adapter Professional designer & manufacturer *0 years of experience UL,CSA, FCC ,CE,PSE,GS,KC,SAA & SGS certificates USB Adapter Rated Input Voltage: ******0Vac Variable Input Voltage:*****4Vac Rated Frequency: ****0Hz Variable Frequency:****3Hz Output: ***2Vdc 0.***1.3A Reliability: Burn-in: **0% full load, *0±5°c, 4Hrs min. Leakage Current:0.*5mA max. at **4Vac. Withstanding Voltage:(between primary & Secondary) ***0Vac 1 minute *0mA max. MTBF:meet MIL-HDBK***7F over **0k hours,full load,*5°c Inrush Current(**0Vac):*0A No-load Input Power:0.3W max Output Voltage Precision:5% Ripple & Noise:<**0Mv Efficiency Level: *2% (V CEC ERP) Operating Temperature:***0 °c Storage Temperature:*****0 °c Operating Humidity:****0%RH Storage Humidity:****0%RH Guarantee Period:1 year Protection: Short circuit protection. Over voltage protection. Over current protection. Thermal shutdown capability. Certifications: We have gotten UL,CSA, FCC ,CE,PSE,GS,KC,SAA & SGS certificates. We could supply you a variety of adapters to meet your requirements. UL Certificate FCC Certificate CE Certificate MLF Safety Packing(PE Bag+Clapboard+Outer Carton) Factory's General Appearance: A variety of products for your choosing(from 3W to *5W): All kinds of certificates(UL/ETL/CSA/FCC/CE/GS/KC/PSE/C-Tick/CB/SGS etc.):