Input Voltage: 48V nominal, Input range: 40V to 60V ; Output Voltage: DC 12V 20A 240W Adopt Synchronous Rectification Technology to improve conversion efficiency, Maximum Efficiency:95%; Ripple Wave: 50Mv; Starting delay time:2S Assembled with smart chip, features Over-current /Over-load /Low-load /Short-circuit /Over-heat intelligent protection Compact aluminium shell with epoxy potting, 100% waterproof, anti-dust, anti-shock protection and better heat dissipation These voltage converters are excellent power transformers, can work safely and reliable in -40°C~80°C range. And all converters are offered 1 year replacement assurance