Owning your own home

Have a look at ERA Homeguard https://www.safe.co.uk/products/era-homeguard-smart-alarm-pro-superior-kit.html

The advantage it has over all the others is that it will still be able to notify you should your wifi be not working, as it can use a SIM card as backup. My parents were burgled once and the fuckers had cut the phone cable before entering, police said its quite common for burglars to do this. Obv a non point if your phone wire is inaccessible from the outside.

We have two cats and they haven't set of the PIR's, it's a decent bit of kit.