I Need Help

[AmateurHomefixer]

I would like a little help about a tool I have and don't know how to use it I need simple instructions
I have a Commercial Electric Circuit finder its an HCS 500. I had it quite a while and I can't find the instructions, and I can't find them on the internet.
Can someone help me?

 

[Yoa01]

All they do is show if there is an electric signal or not. Connect it to either a circuit breaker, switch, outlet, etc. It will audibly tell you if there's an electric signal there or not.