Vesta makes several supposedly. Difficult to know if their actually Zigbee or mislabelled. You'll need to contact them to see what can be sourced directly. They might send a sample unit.
Z-Wave is difficult. There are some EU sellers, but you're then talking about a different Z-Wave frequency from the US.
The analogue to Zigbee keypad @iharyadi experimented with is a nice DIY project. Potentially gives you a huge range of keypad designs to choose from.
