Ultra-long Battery Life;With a battery life of more than one year, there is no need to frequently replace batteries. This long-lasting not only improves the convenience of use, but also greatly reduces maintenance costs and troubles. Check History Records;The history of the open/close record be displayed in the history records of the App, real-time monitoring of your property security. Requirements for Installation;Please note that the thickness of the lock body should not exceed 28mm. This distance is to that the lock body can sense the IC card and unlock smoothly. Reliable Fixation;The fixation of stickers and screws allows the lock body and buckle to fit more firmly to the cabinet door, ensuring safety of use. Technical Specifications: Unlocking methods supported: mobile phone Bluetooth/card Number of users supported: card users: 250 Local management function: supported Supporting APP: , Power supply: 4 No. 7 alkaline batteries (not included) Working current: Less than 50mA Working temperature: -20C to 60C Relative humidity: 20% to 85% (non-condensing) Antistatic ability (ESD): contact discharge 8KV, non-contact discharge 15KV Recommended use scenarios: wardrobe/bedside table/shoe cabinet/drawer, etc. 1. 4 x AAA batteries are not included in package, please purchase in addition. 2. When the battery is out of power, the cabinet door lock remain normally open, pay attention to timely replacement of the battery. Colour:Black Material:plastic Package Contents: 1 * Cabinet Lock kit 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.