How to maual for the Electrodex plus personal...

I looked at the maual on Franklin. It referred to an on/off swwitch. The one taht I have doe snot have a switch of anykind. I bouoght it at an estate sale, put new batteries in. It lights up the screen with type in name or company and when I try to input a name it changes to "no record".

I just need a manual or someone to tell me how to get started and if possible where I can get a manual for this particular model.