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Target customers: 1. Scenarios where wired broadband is unavailable, such as supermarkets and subway stations. 2. Scenarios where the Internet and 4G networks are required for creating backups. Features released: SAG-1000 supports 4G networks. You can plug a 4G module into a USB port to connect the device to a 4G network. If your device is connected to broadband, the 4G network serves as a standby network. When an error occurs with broadband, the device automatically switches to the 4G network. If broadband is unavailable, your devices are connected to Alibaba Cloud through the 4G network.