in home security system
The cellular radio is also used to push updates to the system. For example, the $229 SimpliSafe Foundation is a starter kit that gives
you the hub, a door/window sensor, a motion sensor, and a yard sign. Additional door/window sensors go for $14. 99 each and you can order glass
break detectors for $34. 99 each, smoke detectors for $29. 99 each, and water sensors for $19.