ITEM NAME:DC 6-24V 12V/24v to 5V USB Output charger step down Power Module JR Module Parameters Module Properties: non-isolated buck module (BUCK) synchronous rectification Input voltage: DC 6-24V Output voltage: 5.1-5.2V (You can choose to choose between 3.3-6V, if other voltages Please let the treasurer, the default.Conversion efficiency: up to 97.5% (6.5 turn 5V 0.7A) (short reverse test value protection and fuses). Module Properties: non-isolated buck module (BUCK) synchronous rectification.