Montenegro.

230 V · 50 Hz on Type F, Type C.

Standard Balkan wiring: recessed Schuko Type F sockets that also take two-pin C europlugs, at 230 V and 50 Hz. Visitors from most of continental Europe plug in directly; UK and North American plugs need an adapter, and 120 V gear must be dual-voltage.

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 — Montenegro. Prose is our own.

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

Type A needs an adapter
Montenegro's Type F / Type C sockets don't take a Type A plug.
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Type B needs an adapter
Montenegro's Type F / 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.