Yes, they do. Most security cameras and motion detectors have rechargeable batteries or an external power source, so they can continue to operate when the main power is out. In addition, some remote monitoring systems come with a built-in backup system to ensure that all recordings are stored even in the event of a power outage. Automated systems can be programmed to alert users through email or text messages if there is an unexpected power outage. This allows remote monitoring users to take action quickly and protect their property.