Welch Allyn 20хEL Propaq Encore Vital Signs Monitor - Reference Guide - Manual (Page 122)

Power Adapter Intended Use
Welch Allyn 122 Propaq Encore Reference Guide
Caution Make sure the voltage selector indicates the proper ac input voltage.
If you change the adapter voltage setting, you must replace all fuses to match
the appropriate type specified on the bottom of the power adapter. The only
fuses contained in the power adapter when shipped from the factory are fuses
specified for the original adapter input voltage setting.