Finding the serial number on the DM300M-DM475

Watch the video or follow the instructions to learn how to run mail through your franking machine.
Products affected: DM300M™, DM400M™, DM475™ (G922, RG9224M)

The serial number, also referred to as the meter number, is the identification number registered with Royal Mail for the license of your franking machine.

The serial number is on a white sticker, located at back of the franking machine.

The Product Code Number (PCN) is the franking machine type.

The serial number (Meter #) is a 7-digit number, beginning 66....

UPDATED: 03 January 2023