Type O Travel Adapter (TIS 166-2549)

Type O plugs are the modern grounded plug system defined by the Thai national standard TIS 166-2549. The design uses two round pins with a grounding pin and was introduced to improve electrical safety and standardization in Thailand. Two pin non-grounded adapter also included.

Electrical standard: typically 220–240 V / 50 Hz.
Adapters do not convert voltage.