The new lock is in exchange for the old at the cellar door. My reason for this castle was that I firstly wanted to wear no additional key with me and secondly, especially in the shadowed door badly strained during the offered combination locks my vision (reading glasses .... ;-)). Therefore, I have decided on this castle. Once studied the manual and deals with its own code, the operation is to be managed quickly and above all with one hand. Why a point deduction? Now, the manual is used to and if possible to study more than once. So I once had a panic that the red castle was lighting up, as I had the code is entered incorrectly multiple times wearing thick gloves .... Do not worry, after about 30 seconds. hear the lock blinking and you have 5 attempts freely again ....