Hi,

If forgot to mention that there is no such thing as a 1500, but that term is
used to describe the 1500 series of products. The model number of the unit
is printed on the back of the unit and also available in the system/setting
screens in the software.

Paul Remde

"sk6f3" wrote in message
om...
What is the difference between a 1500 and a 1550, and how do you tell?