Retrofit Alarm Kit

Have a wired alarm system? Make it smart with Ring Retrofit Alarm Kit, a wired-to-wireless bridge that conveniently connects your existing hardwired contact sensors to your Ring Alarm system.Requires Ring Alarm Base Station. Professional installation recommended (but not required). Please note:Existing wired contact zones must be in good working order.Requires Ring Alarm or Ring Alarm Pro, sold separately.Ring Alarm and all Ring Alarm accessories require a compatible Ring subscription (sold separately) for digital arming/disarming and certain other in-app features.,