Some Arlo cameras can record 24/7, including the Arlo Pro 4 and the Arlo Ultra 2. But you have to subscribe to a different monthly plan than the regular Arlo Smart subscription before you can enable 24/7 recording. Arlo's Continuous Video Recording (CVR) plan costs $9.99 per month for 14 days' worth of recording or $19.99 per month for 30 days' worth of recording.