You can determine the model of the ProScope that you have by looking at the color of the base. If the body is white, then it is a ProScope HR. If the body is black it is an HR2. If the body is grey, it is an HR5.

You can also examine the base of the body / handle where the cable connects to the ProScope. The model and serial number will be listed along with a serial number.

Original ProScope
Model: UM02-SUZ-01
Color: White
SN: XXXXXXXX

2355-proscope.jpg

ProScope HR
Model: PS-HR-BASE
Color: White
SN: HRXXXXXX

There have been 2 versions of the ProScope HR released.
(ProScope HRa) was released in September of 2006
Serial numbers range for these run from HR060001 to HR092399
(ProScope HRb) was released in November of 2009
Serial Numbers for this variant are HR092400 to still in production
2355-proscope-hr.jpg

ProScope HR2
Model: PS-HR2-BASE
Color: Black
SN: HR2XXXXXX
Released: August 2009
Serial Numbers: HR2090001, ceased production in 2019
2355-proscope-hr2.jpg

ProScope HR5
Model: ProScope HR5
Color: Grey
SN: HR5XXXXXX
Released: Fall 2018, replaced HR2
Serial Numbers: HR5XXXXXX in production.