Open and manage with your smartphone. Grant or revoke access using Master Lock Vault eLocks App. Large storage capacity for keys and key cards. Optional manual code access. Use the App or the Web to track usage. Solid body with protective coating prevents scratches. Weather resistant to -40. 3 lbs. 2-1/2"W x 5-1/4"W x 8-13/32"H. Black and Grey.