An ACDC power supply with over-voltage protection includes a voltage converting circuit and a digital latch control circuit. A compensating unit may be coupled to free wire segments of the grid that are created by the cut-out and the compensating unit may be configured to alter current supplied to remaining LEDs of the grid of LEDs. A call distributor is in communication with the pico-cell and handles calls carried by the pico-cell. To adjustably fit the tool on a nut, the socket opening disposes around the nut, and the screw threads in the opening until the screw’s distal end engages one of the six sides of a hex nut.