Open and close electronic safe with 3-8 - digit code 3 light indications (green, red, yellow, to open respectively, 'low battery' indication and warning Use closing and opening button Change code with the reset button Mounting at the bottom and back possible (drill holes provided) Outside size: 17 x 23 x 17 cm Inside size: 16.8 x 22.8 x 12 cm Steel door thickness: 2.5 mm Thickness steel body: 1mm weight: 2.3 kg 4 x 1.5 V AA battery (excluding)