The Bluetooth lock can be unlocked via Bluetooth.<br> If you want to unlock via mobile phone regardless of distance, please purchase it with the gateway on the link.<br> A house generally only needs one gateway unless your home is very large.<br> Specifications:<br> Product Name: Smart Drawer Switch<br> Connection method: Bluetooth<br> Unlocking speed: 1-3s<br> Unlocking distance: less than or equal to 10m<br> Product color: white<br> Product material: ABS PC<br> Power supply: two AAA batteriesnot include<br> Working temperature: minus 40 degrees Celsius - 85 degrees Celsius<br> Package Included:<br> 1* lock body<br> 1* lock<br> 1* instruction manual<br> 2* stickers<br> 1* block<br> 1* screw fittings (5* large screws 2* small screws)<br> APP:tuya smart/smart life<br> Mobile phone is your key, bind account, never lose.<br> Easy to open the cabinet lock with one button, suitable for bookcases, bedside cabinets, file cabinets, etc.<br> Important documents and personal items in the office drawers do not want to be turned over. When using traditional mechanical locks, colleagues are anxious to ask for documents, cannot hand over keys or keys, and the smart switch can lock the privacy and freely authorize the keys. Increase work efficiency.<br> Real-time view of unlock records, APP automatic management.<br> Remote key authorization for increased productivity.<br> With automatic locking function, free to control.<br> Monocrystalline silicon semiconductor chip, stable performance.<br> Two AAA batteries powerednot include, ultra low standby power<br> Can be set to low power automatically open, to avoid important files can not be removed.<br> Specifications:<br> Product name:Smart Gateway<br> P