This smartlock has been set up, the battery can be used (no battery Oh ~)! Applicable to drawers, single-opening doors, double-opening doors, sliding wardrobe door. Features: Secure and conveninent, very easy to use. Mutiple applications, different functions for people to choose to apply. Applicable to drawers, single-opening doors, double-opening doors, sliding wardrobe door. Battery(not included) digital lock, veryunique and novel. It can provide safety protection of yourpersonal items while protecting your privacy. It also can improve children's safety at home, avoiding your children or kids free to open the drawers or cabinet doors. Easy to install and use. Ultra low power consumption and extended service life. Two unlock modes: According to different needs single card can be unlocked or double unlocked. Using your origin key or card can also enter the system, one key and opening more locks. Specifications: Materail: ABS Color: white Battery: 2 * AA Battery (not included) ID key color: blue Lock body: 86 * 63 * 28mm / 3.4 * 2.5 * 1.1in Lock buckle: 52 * 48 * 16mm / Weight: 150g / 5.3ounce Package size: 130 * 80 * 45mm / 5.1 * 3.1 * 1.8in Package weight: 170g / 6.0ounce Package List: 1 * Lock (Not Included Battery) 1 * Lock Buckle 1 * IC Card 1 * Screw Set 1 * Key