Panasonic NM-EJW2A Operating Instructions Manual page 17

The serial plate indicating the product name (Model ID) and production number (Serial No.) of the machine
is pasted on the following location.
EJW2A-AB
EJW2A-E-OMA00-A04-01
Serial plate
Actually, ∗ is replaced with a numeric value.
NM-EJW2A
NM-EJW2A
17