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Ring Alarm Retrofit Kit

by Ring
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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. 

This product is for customers with functional wired contact sensor zones from an existing security system who wish to make the switch to the Ring alarm system. The Ring alarm system (sold separately) is required to enable Retrofit alarm kit functionalities.

Connect your existing wired contact sensor zones from an existing security system to the Ring alarm system with the Retrofit alarm kit.

When connected to the Retrofit alarm kit, doors or windows with existing wired contact sensor zones will function as a part of the Ring alarm system.

Receive mobile notifications, and arm or disarm your Ring alarm system from the Ring app.

Manage all your Ring alarm devices, including connected existing wired contact sensor zones, and your Ring doorbells and cameras through the Ring app.

Installation by an experienced security system installer or licensed electrician recommended.

Switch and save with Ring. Get 24/7 emergency services with professional monitoring for $10/month with a Ring Protect Plus plan.

Works with Alexa to arm, disarm, and check the status of your Ring Alarm system.

Does not work with existing third-party keypads.


2 X 3V Lithium 123 Batteries Included


4.53 in. X 4.53 in. X 1.0 in. (11.51 cm. X 11.51 cm. X 2.54 cm.)


Mounts to Walls, Double-sided Tape Provided, Screw Mounting Optional(screws are not provided)

Operating Conditions

32°F to 120°F (0°C to 49°C)

 Setup Requirements 

Ring Alarm Kit


1 year limited warranty

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