TR500 Landline Phone Call Recorder, Automatic Telephone Recording on Analog Lines

Will this work on a cordless landline phone?

Can I set this up so it is hidden/discreet. Can it work on land line and cordless phone?

The caller id can be saved in the memory card? with display of the date & Time? Does this device let caller knows that it will be recorded?

We have analog phones with two lines. Will this work with a phone regardless of which line is being used?