I am trying to decide between a digital or dial type of lock. I live in Phoenix Arizona, the safe would be kept in the garage. For about 4 months a year the temperature in the garage remains above 100 degrees (even at night). I expect that kind of heat will cause burst batteries. I really do not want to worry about battery acids ruining the lock, should I just go with the dial type in this situation? Are there any other things I should consider when keeping a safe in a hot area of the house?

Thanks!