Below is whey they are using.
"
In the U.S. alone, nearly 50,000 residential fires each year are caused by an electrical malfunction, resulting in more deaths, injuries, and damage than any other type of fire in the home."
There's also a device called "Ting" that can monitor and report arc faults to prevent fires. Especially useful older homes without AFCI.
The Electrical Fire Problem - Ting
Some insurance companies provided then for no charge.
Ting may be available to you for Free from your insurance company