Yale Fingerprint Safe Stellar 520/DB2. Operation: Fingerprint / Pin / Key / Fingerprint + Pin. Stores up to 30 fingerprints. Can be programmed with any combination of 3 to 8 personal numbers. USB back up in case of battery discharge and LCD keypad display for quick access. External Dimensions: 520mm (H) x 350mm (W) x 360mm (D) Internal Dimensions: 515mm (H) x 345mm (W) x 300mm (D) Weight: 19 kg Volume: 53.8 litres. Free Delivery to ground/lift accessible level. 1 year product warranty.