Korjo

No, and this is a critical distinction. Korjo adapters merely change the shape of the plug pins so they fit into a foreign wall socket. They do not change the electrical voltage (e.g., from 110V to 240V). If you plug a standard Australian hairdryer (240V) into a US socket (110V) using just an adapter, it will run slowly or not at all. If you plug a US device (110V) into an Australian socket (240V), it may blow up. You need a transformer to change voltage, though most modern electronics (phones, laptops) are "dual voltage" and work with just an adapter.

Standard European sockets utilize two round pins. However, older sockets in Italy and Switzerland often have narrower or recessed holes that a standard thick-pin EU adapter cannot fit into. The Korjo KA EU IS (often identifiable by its thinner pins) is specifically designed to fit these tricky sockets while still working in most other European countries, making it a safer "all-rounder" for a Euro-trip.

Many Korjo TSA locks feature a small "Red/Green" indicator ring. When you buy the lock, it is set to Green. If TSA security agents in the USA use their master key to open your bag for inspection, the indicator will pop to Red. This lets you know immediately upon collecting your luggage that your bag has been opened and searched by authorities.

Korjo’s RFID blocking range (money belts, passport defenders) is engineered to block radio frequencies between 10 MHz and 300 MHz. This covers the frequency used by smart chips in credit cards and e-passports (13.56 MHz), effectively stopping "skimmers" from wirelessly stealing your identity or credit card numbers while walking through a crowd.

The Korjo USB 04 Hub is "multi-voltage," meaning it can handle input from 100V to 240V. This makes it safe to use in virtually any country (USA, Japan, UK, etc.) as long as you attach the correct destination plug adapter to the unit. It is designed to charge devices safely without needing a separate heavy transformer.