At the insertion/sealing/inspection operation (มีสถานีเดียวสาหรับทั้ง A12117c และ B33433x) the electronic components are inserted, the case is assembled and sealed, and the completed unit is tested. The time to accomplish all of this is expected to be 2 minutes for the A12117c assemblies, and 3 minutes for the B33433x assemblies. An average variation of plus-or-minus 20% around these values is considered the standard allowance for variability.