* Start without a battery * It takes 3 seconds only to work * HD LED current precision four-digit display * Three kinds of inputs, all support wide voltage DC 5V-28V input. A: Mico-USB input; B: DC3.5 Port input, support DC5V-28V with any power adapter; C: Adjustable DC voltage stability power input, the standard match is red and black gold-plating with the banana head terminal * Constant voltage and constant current output,automatic protective,Don't worry error voltage causing the motherboard to break * Siz of ports USB output all have with it
