The power supply industry has been using Class 2 and Class II terminology to refer to two very different types of power supplies for decades.
725.1 Scope.
What's the Difference Between Class 2 and Class II Power Supplies
3 Prong Plug 3 Terminal Outputs. Approved by UL and CUL standards. 60Hz Rated frequency
PWS-1640 16V AC 40VA Class II Power Supply AC Adapter UL 16V Transformer Plug with terminals
Selecting Appropriate Input and Output Plugs for Your Power
The Difference Between Class 2 and Class II Power Supplies
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What is the Difference Between Class 2 vs Class II Power Supplies
CUI Inc Distributor
120V/24V 60W Plug-In Electronic Transformer Class 2 Power
Is There a Difference Between Class 2 and Class II Power Supplies