SimpliSafe's Self Monitoring with Camera Recordings and Fast Protect monitoring plans come with unlimited camera recordings and 30-day cloud storage, so you can go crazy with how many cameras you want (so long as you have those monitoring plans). Without a monitoring plan, you won't be able to view past recordings or get alerts, but you can view the livefeeds of cameras for free. Keep in mind that cameras can strain your internet connection. The more cameras you have, the more bandwidth they'll take up.