Using the IUP Corp. Fault Wizard Wire Fault Finder is easy. First, make sure the input voltage of 24 VCD is properly connected. Then, start using it to find faulty wires. The output voltage can go up to 10,000 volts, but be careful not to touch the live parts. When you're done, turn it off. As for maintenance, keep it in a dry place. Since it came from a working environment but is untested, if you notice any strange behavior during use, stop immediately. Don't try to repair it by yourself. Just bring it back to a professional for help. And remember, this item is for local pickup only at the MSU Surplus Store.