To be on the safe side, I would buy some sort of adapter. That, or depending on how long you're going to be in Mexico, it might just be cheaper to buy a new monitor rather than have your current one sent across the pond.
I bought an Acer 17" monitor in England where the mains voltage is 220-240v. I am going to Mexico in a month where the voltage is 110v. I checked the manual for the monitor and it states that the voltage required for the monitor is from 100-240v. This seems an extreme voltage range, do you think my monitor will work in Mexico?
Thanks for any advice.