Slovakia.

230 V · 50 Hz on Type E, Type C.

Like the Czech Republic and France, Slovakia uses the Type E socket — an earth pin protrudes from the socket face rather than living in the plug. In practice this changes little: europlugs fit fine, and the hybrid CEE 7/7 plug found on most modern European appliances mates with both E and Schuko. 230 V 50 Hz throughout.

The voltage window

A nominal 230 V supply may legitimately sit anywhere between 207 and 253 V (±10%). Dual-voltage gear (marked 100–240 V) shrugs at all of it.

Grid facts verified against IEC World Plugs — Slovakia. Prose is our own.

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Pack an adapter — Slovakia runs 230 V 50 Hz on Type E, Type C — and your 120 V appliances need to be dual-voltage or transformed, adapter or not.

Type A needs an adapter
Slovakia's Type E / Type C sockets don't take a Type A plug.
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Type B needs an adapter
Slovakia's Type E / Type C sockets don't take a Type B plug.
the full story

Faces drawn to scale from pin dimensions · verdicts are physical fit + voltage math, not safety advice — when in doubt, ask the hardware store, not the internet.