I'll actually increase my devices as I go forward. I am looking to buy a white noise machine, a video door bell, security cams for my perimeter. Suggestions for

I'll actually increase my devices as I go forward. I am looking to buy a white noise machine, a video door bell, security cams for my perimeter. Suggestions for the doorbell and cams welcome. My phone is about 6 years old now so I might get a new one towards the end of the year depending on how it performs.