SC With Cylinder. The weather resistant Simplex EE1000 series from dormakaba (formerly known as Kaba) is a fully mechanical digital lock solution, eliminating the hassle of frequent battery replacement. The lock can be easily programmed via the 5 push button keypad and does not require the lock to be removed from the door. This back-to-back knob operated digital lock supports a single access code and features key override on both sides of the lock.. Non-handed; field reversible. Combination can be changed to ensure maximum security. One or all five buttons can be used in combinations. Optional key override