(DIGITAL VERSION) Complete kit (Digital) in all respects with the following built in components. · · · · · Built in two IC regulated power supplies 0-3V & 0-20 V (@ 100mA) Three digital meters 20V, 20V & 20mA with their independent sockets are mounted on front panel SCR with their independent sockets are mounted on front panel. Vo l t a g e c o n t r o l l e d t h r o u g h t w o d i f f e r e n t Potentiometers. Fuse for short circuit protection.