Thailand's electrical system operates at 220V/50Hz. The country officially uses Type A (two flat parallel pins), Type B (two flat parallel pins plus a grounding pin), and Type C (two round pins) outlets — often all available in the same socket, which accepts most plug types. Visitors from the US and Canada (110–120V) need to check their devices for dual-voltage compatibility (look for "100–240V" printed on the adapter or device — most modern laptops, phones, and cameras are dual-voltage and will work fine with just a plug adapter). Visitors from the UK, Europe, and Australia need only a plug adapter, as their devices operate on similar voltages. Thailand's unique multi-standard sockets accept most plug types without an adapter in practice — a UK 3-pin plug won't fit, but a Euro 2-pin plug will go straight in. The practical recommendation: bring a compact universal travel adapter (฿150–400 at any airport duty-free or 7-Eleven), and if travelling with multiple devices, a surge-protected power strip from home means you only need one adapter and protects your electronics against occasional voltage spikes. Power cuts are rare in cities but more common in rural areas and outer islands during storms — a lightweight UPS for sensitive equipment is worth considering for long-term stays.
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