No model of Nest Thermostat is available, sold or supported in Mexico I'm afraid. Nest Thermostats are optimized to work best with specific Wi-Fi standards, depending on where they are sold and designed for. If you choose to export one from a supported country to another country, you will receive no Google support, it may experience decreased performance, may not work as expected, and it may not comply with regulations in the country you've exported it to.
