Feature: 1. COMPATIBILITY: For G2 WiFi gateway is compatible with smart locks using for DD lock App or for TT Lock App, one gateway can be paired with multiple door locks of the same account. 2. REMOTE CONTROL: The gateway is connected to for DD lock App or for TT Lock App smart lock, which can realize remote control, check the status of the door lock in real time, and remotely set custom passwords and other remote functions. 3. VOICE CONTROL: After the gateway is paired with the smart lock, it is compatible with for Google voice helper to realize voice intelligent control. 4. CONNECTIONS DISTANCE: To ensure a stable connection between the G2 gateway and the door lock, the distance between the gateway and the door lock should be within 32 ft. 5. WIFI REQUIRED: When adding the gateway, your smartphone and the gateway must be connected to the same WiFi network. 2.4G WiFi network is required for pairing. Specification: Item Type: Smart Lock Gateway Material: ABS Product Size: Approx. 70x70x26mm / 2.8x2.8x1.0in Network: WiFi 2.4G IEEE Standard: 802.11 b/g/n Power Connector: Type C Power Input: 5V 500mA. Package List: 1 x Smart Lock Gateway1 x Type C Cable1 x Instruction Manual Note: All data are measured manually, and there are certain errors in the measurement results.