201787. The 201787 Cylinder Combination Plug from dormakaba (formerly known as Kaba) is supplied with 2 keys (DF59) and is designed to suit the dormakaba Simplex 1000 & L1000 series of mechanical digital locks.. Suits dormakaba Simplex 1000 & L1000 Series. Combination change plug assembly kit. Supplied with 2 keys (DF59).