iPad mini iPad Mini Waterproof? Water Sensors

Does anybody know whether the iPad Mini is waterproof as I know that Apple's lightning connector is now said to be waterproof and Apple recently took over Liquipel. Also, after a dunk in Squaretrade's tank, it seemed to be working perfectly.
On another note, where are the water sensors in the iPad Mini? Or does it lack them?

Thanks, I will. Actually the lock button on mine went spazzy after installing an invisisheikd with a bit too much of the spray. Back to normal now