Setting up the system is simple: Just download the Ring app, plug in the base station, place the sensors where needed, and activate them. The system offers three security modes: Home mode keeps ...

The Ring Alarm 5-Piece Kit includes a base station, a keypad that you can use to arm and disarm the system, a contact sensor that sets off the alarm when its components stop touching each other ...

The second generation Ring Alarm is already on sale in the US for $249. The UK starting price is £219 which includes a base station, keypad, contact sensor, motion detector and a range extender.

and a Combination Smoke + Carbon Monoxide Alarm. Amazon-owned Ring has teamed up with home-fire brand Kidde to build the products. And they'll link up with the Ring app, just like the regular Ring ...