To enter the code for the key safe, set the four number wheels to the previously set combination. At the beginning, this combination is usually "0-0-0-0". Grasp the housing from the outside and pull the top of the safe towards you. To change the code, open the safe with the current combination, slide the reset pin to the bottom left and set a new combination. Make sure that the numbers are centred and noticeably engaged. Close the top and check the function.