For a device requireing 12v 1.5A will a DC adaptor output 12v 2A also work for this device?

Yes, a DC adaptor outputting 12V and 2A will work for a device that requires 12V and 1.5A. The adaptor can provide up to 2A, which means it can supply the necessary current without overloading. Just ensure that the voltage matches (12V) and the polarity is correct for safe operation.