Remove the inside cover, remove a battery from inside the lock then remove the module.

Press and hold the ‘R’ button. Continue holding the button and insert battery.

The lock will beep 12 times followed by a three-tone ascending beep.

Wait for 10 seconds, a two-tone sound will be heard.

The master code is now set to 123456, and all codes, Cards/Tags and Fobs are deleted.