Have a wired alarm system? Make it smart with Ring Retrofit Kit – a wired-to-wireless bridge that conveniently connects your existing hardwired contact sensors to your *Ring Alarm.* Wire up to 8 zones with one Retrofit Alarm Kit (Note: not for use with wired smoke or CO detectors or existing keypads) then control it all from the free Ring App. Receive mobile notifications when connected wired zones are opened. Arm and disarm your system with a simple tap. Even manage all your *Ring Video Doorbells, Cameras and Alarm devices from one simple dashboard.* *Existing wired contact zones must be in good working order. Color: One Color.