He/o safe for surface-mounting, electronic code opening from 3 to 8 digits. made of steel, 4 mm front thickness and 2 mm body thickness. locking with 2 lateral ø16 mm bolts. features 8 fixing holes of ø9 mm (4 on the base and 4 on the back, screws included). capacity 6 kg / 5 l, for small valuables. includes emergency key and opening block system after 3 incorrect attempts. power supply: 4 aa batteries (not included). exterior 230 x 170 x 170 mm / interior 226 x 130 x 166 mm