Bread board style solderable work area for your coming solder project with built in power supply 5V , Variable V & GND lines for much more easy for connection all types of components. Features: * Protection fuse 1A * Two different ways to supply the kit you can use one of them (DC or AC 12V) * On off master power switch * Vcc 5Vdc , Vr( adjusting Volt) & GND Rails * Potentiometer to adjusting Vr the adjusting volte range (1.25 Vdc to  Max I/P Voltage - 0.8Vdc) * Led indication for Vr its sheen according to output voltage. it maybe sheen very or weak switched off totally * 4 PCB spacers to give a suitable higher of the board * Size 125x55 mm