5-Digit Display, support 60.000V 18.000A max output ^^ RD6018P doesn't have WIFI board, only supports micro USB connection to PC software, no APP. ^^ suitable for battery charging, you need to use the green battery charging terminal ^^ There is a backup fuse in the box, if you burn the fuse, you can insert the fuse in the socket next to the burned one for short time use under 10A, you do not need to use it now ^^ Integrated panel, you only need a shell and a AC-DC power source to form a powerful and adjustable power supply.