PostBase and PostBase Mini base serial numbers are used to look up your R-PIN number.

What to look for:

  • PostBase begins with EP (e.g. EP999999).
  • PostBase Mini begins with PM (e.g. PM999999).
  • PostBase 100 begins with PX (e.g. PX999999).
  • PostBase One begins with CM (e.g. CM999999).

Find this serial number in one of the following places:

  • Label on the bottom of your meter's base


PostBase Mini

PostBase Pro

PostBase Pro Label

  • Label on the back of your meter's base

PostBase One Label

  • Label on outside of shipping box

  • Packing Slip

PostBase Shipment List