Specifications: Dimensions: 2.76 in * 2.76 in * 1in. Power interface: Type-C USB. Power input: DC 5V/500mA. Network requirements: WIFI 2.4G IEEE standard: 802.11b/g/n Note: 1, It is WIFI bridge with bluetooth, so please keep the smart gateway to connect your door lock, also connect to your WIFI routine in the same network. 2, It is only work with smart door lock with TTLock app. If you want to connect the G2 gateway with other smart home devices, please contact customer service for confirmation. WARRANTY: We provide 6 months warranty from the date of purchase. If you have any questions, please feel free to contact Customer Service Support.