Bell Box for US Systems
I had no idea the Bell Box existed. For those curious you can read about it at https://simplisafe.co.uk/blog/what-is-a-bell-box-and-why-do-you-need-one . You can also see it in action at https://www.youtube.com/watch?v=8SYJ3Act7lo if you're curious about the red light.
I think something like this (with some changes, like adding the aforementioned strobe light, a hardwire power option, etc.) would be a great addition to the SimpliSafe portfolio.