With password memory function, the original password will remain after changing the battery The panel is made of metal, which is more durable With password confusion function,you can enter a string of random numbers before or after the correct password to prevent others from seeing Suitable for agents, schools, spas/saunas, swimming pools, gyms, golfs courses, supermarkets, hotels, companies, factories and families With password error alert, enter the wrong password four times in succession, the keyboard will be locked for 60 seconds and activate the alarm Suitable for doors with thickness of 0.5 ~ 12mm size:37.2*92.5MM Material:ABS + metal colour:Black + Silver Package Contents: 1 * Electronic Combination Cabinet Lock 1 * Installation Accessory Pack Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.