
I bought several of these adapters, 2 for Europe & one for Switzerland. They work fine but they are bulky. On the cruise ship the space is limited and these plugs take up space. They have multiple USB & 1 USB C plug. Most of the time I ended up using my retractable plug adapter on the cruise ship & in the hotels with limited outlets.

UL Listed Light Socket Polarized 2 Prong To 3 Prong Outlet Adapter W. Safety Seal Grounding Plug Converter + Waterproof Outdoor Extension Cord Plug Cover For Electrical Outlets
30 Review

Pink 15Ft 1875W Heavy Duty Extension Cord By FIRMERST
29 Review

Kungfuking Desk Power Grommet Outlet Strip With 2-Socket &2-USB Ports, 9.85 FT Extension Cord, ETL Listed
38 Review

Black Kungfuking Pop Up Power Strip Charging Station with 3 US Plugs and 2 USB Ports for Kitchen Counter Island Conference Office, Recessed and Retractable
37 Review

Wireless Electronic Ballast Interface Certified
8 Review

π‘ High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review

Fulham WorkHorse WH2-120-C Adaptable Ballast - 2 Pack
3 Review

Robertson Worldwide ISL432T8HEMV AH 3P20160 120-277V 50-60Hz High Power Factor 4 F32T8 Linear Lamp Fluorescent eBallast
6 Review