Thailand Type O Travel Adapter (TIS 166-2549)
Thailand's modern grounded plug has two round power pins and a third grounding pin. It is known as the Type O plug.
A Thailand Type O travel adapter, also spelled Thailand Type O travel adaptor or TIS 166-2549 adaptor plug, changes the plug shape only. It does not convert voltage.
This grounded Thailand power adapter accepts plug styles from most countries except Type M. Type E/F Schuko-style plugs fit but are not grounded.
Thailand Type O Travel Adapter Quick Facts
- Two round power pins and a third grounding pin
- Grounded plug and outlet system
- Defined by Thailand's TIS 166-2549 standard
- Thailand uses Type A, Type B, Type C, and Type O plugs
- Thailand typically uses 220–240V / 50Hz electricity
- A Thailand plug adapter changes the plug shape only
- A plug adapter or adaptor does not convert voltage
What Plug and Travel Adapter Do I Need for Thailand?
Thailand uses Type A, Type B, Type C, and Type O plugs. Type A has two flat pins, Type B adds a grounding pin, Type C has two round pins, and Type O is Thailand's grounded plug with two round power pins and a third grounding pin.
For complete country information, see the Thailand plug and adapter guide.
Thailand Voltage: 220–240V / 50Hz
Thailand typically uses 220–240V / 50Hz electricity. Check the voltage printed on the device or charger before connecting it. Devices marked 100–240V / 50–60Hz require only the correct Thailand plug adapter. A 120V-only device may require a voltage converter.
Countries Where Type O Is Encountered
Type O is used in Thailand. Adapter is also spelled adaptor, and grounded is also described as earthed.
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