Note: This product is a set of combination products, not detachable for use, please remove all your old parts and adopt all our parts to work properly(Once you have completed the installation, be sure to and hold the red button for 10 seconds to reset the system and it for normal use) Stong and Safe Lock: High grade chrome zinc alloy fire panel that provides physical protection against forced entry and lockout mode for 5 times false codes(locked for 5 minutes) Easy Operation & Installation: Right Swing including 2 override keys. Open with 3-8 digital codes that very easy to use and allows manual reset: a needle or a paperclip needed in case you lose the code including low voltage signal Application: All kinds of home & lock box, , , hotel safe, cabinet , drop slot safe and most basic and medium security level on the market Service: If you are not a safe technician or professional locksmith, please do not attempt the installation. Power Supply:1 x 9V battery (Not included batteries) Color:As Shown Material:Aluminum Alloy Package Contents: 1 * fingerprint password lock 2 * keys 1 * lock Only the above package content, other products are not included. Note: Light reflection 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.