Help & Support

Welcome to the Securikey help and support section. Here we have a selection of videos and PDF guides to help you use our products. If you have any pre-sales questions please contact 01252 311888 and a member of our team will be happy to help.

Master Lock 5403 Code Change Instructions

Simple instructional video showing how to change the combination of the Master Lock ‘Select Access’ 5403 key storage unit.

1m 21s

Video Transcription

Introducing the Master 5403 extra-large key storage device. This simple-to-operate unit is ideal for the storage of larger bunches of keys and access control cards. All the 5403s come factory-set to 0000. To change the code, enter 0000 and open the unit up. To change the combination, push the Reset button across and up. With the door open, select a 4-digit code of your choice. In this instance, we’re using 2001. With your new combination entered, return the Reset button to its original position. With the door open, check your code several times to make sure that it is correct before locking this unit.


In addition to our ISO 9001 certification, Securikey are also members of Master Locksmiths Association and ESSA. These organisations promote the highest standards within the security industry. The inclusion of the ‘AIS Approved’ logo reinforces the importance of the independent testing.