I’ve seen monitors with a light on them and I think they make one with motion detector for sleepwalkers too.
Small dogs have a place if you can stand them, remember to hook dog kennels (if you have them) to alarm system if you lock them up, hit the panic button and it releases the Gates.
Finally before buying or renting a property check out it’s history;drug dealing, domestic violence, abandoned,richest guy in town, lets you know of possible threats. Most of our local home invasions recently have been former drug dealer homes or victims that were once in the trade.
Remember someone gets out of jail and may not have up to date street knowledge, so goes to old haunts.
Good advice. For some reason this reminded me of how Charles Manson chose Sharon Tate's house to begin his carnage. If i'm remembering right, Manson thought record producer Terry Melcher still lived there and was mad at him for ruining his dreams of stardom. ..... < /useless trivia > ;)