There is no difference in the specifications of the KRA-405 P/N 066-1048-00 and -02 versions other than that the -00 has two altitude trips and the the -02 has three altitude trips.

Also, the -00 provides 2 altitude trip points at 200 and 500 feet. The -02 provides 3 altitude trip points at 200, 500, and 1200 feet. These altitude trip points are factory settings.