This electronic digital lcd panel is user friendly and it can take 4-8 digits as secret password to open and close the locker. We provide battery holder on the door outside to change batteries easily when need arises. For more security we have provided one more mechanical lock with unique key. The secret mechanical key for emergency opening of the locker in the event of forgetting password / low battery / erratic function of panel. We have provided felt lining for better usage of customers.