Security is more reliable than ever, with the Tend Secure Lynx Pro. Monitor with uninterrupted video monitoring and a robust security solution that is unmatched in the market. Built-in battery backup and local storage, Lynx Pro will store up to three days of data* if there is an outage of power, internet or both. Once power and internet returns, local data is uploaded to the cloud. *Based on one hour of recording/streaming per day.