---
product_id: 167462891
title: "Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required"
brand: "ring"
price: "VT82502"
currency: VUV
in_stock: false
reviews_count: 9
url: https://www.desertcart.vu/products/167462891-ring-retrofit-alarm-kit-convert-wired-security-contact-sensors-to
store_origin: VU
region: Vanuatu
---

# 250-ft Z-Wave range 5-year battery life Supports up to 5200Ω wired sensors Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required

**Brand:** ring
**Price:** VT82502
**Availability:** ❌ Out of Stock

## Summary

> 🔒 Upgrade your legacy security to smart protection — don’t get left behind!

## Quick Answers

- **What is this?** Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required by ring
- **How much does it cost?** VT82502 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/167462891-ring-retrofit-alarm-kit-convert-wired-security-contact-sensors-to)

## Best For

- ring enthusiasts

## Why This Product

- Trusted ring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Power:** Equipped with 2 lithium 123 batteries delivering up to 5 years of reliable performance.
- • **Robust Connectivity:** Z-Wave technology ensures a strong 250-foot wireless link to your Ring Base Station.
- • **Seamless Smart Upgrade:** Convert your existing wired sensors into a smart Ring Alarm system without rewiring.
- • **Unified Security Control:** Manage all your Ring devices and retrofit sensors effortlessly via the Ring app.
- • **Pro-Recommended Installation:** Professional setup guarantees optimal performance and peace of mind.

## Overview

The RingRetrofit Alarm Kit transforms your existing wired contact sensors into a fully integrated Ring Alarm smart security system. Compatible with most wired door and motion sensors, it uses Z-Wave wireless technology to connect up to 250 feet from the base station. Powered by long-lasting lithium batteries with a 5-year lifespan, it enables centralized control through the Ring app, including mobile alerts and Alexa integration. Professional installation is recommended to ensure seamless operation. Note: Requires a Ring Alarm Security Kit and subscription for full smart features.

## Description

desertcart.com: Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required : desertcart Devices & Accessories

Review: Multiple Retrofit Kits: 6 Months DIY Experience - This review is for the Ring Retrofit Kit only. Other components of the Ring Alarm System are reviewed elsewhere. I decided to install the Ring Retrofit kit to replace the legacy alarm system that came with my home. My original system had 20+ alarm circuits. I installed two retrofit kits to transfer 16 of the existing circuits to a new Ring Alarm system. This was a very doable DIY project. It will help if you have a clear understanding of your existing system. Find the wiring diagram for your old system and study it. Take lots of photos and label everything. It helps if you make sure all of your alarm circuits are working BEFORE you do the retrofit. I needed to replace two of the magnetic sensors in my windows before I could attempt the retrofit. You use the Ring app to add circuits one at a time. Disconnect the circuit from the existing system, and then connect the wires into the Ring Retrofit module. I needed to add extra length to most of the circuit wires, so you might need a spool of alarm wire, and some wire connectors to complete the circuit. Once the circuit is connected, the app will ask you to open and close the associated window/door for testing. Repeat the process for each sensor circuit that you add. Traditional alarm systems include a resistor in the circuit in order to detect tampering. My system had the resistors in the alarm box, so I could just reconnect the existing wires to the retrofit kit. A lot of reviewers are concerned about the need for resistors. My reading of the Ring documents seem to indicate that any wiring arrangement will work with the retrofit kit (resistor or not), as long as there is not a short circuit or broken wire. PROS: The retrofit kit allows you to use the existing sensors in your home. This not only saves money, but it also gives a “cleaner” look to your home when you don’t have to have clunky wireless sensors attached to each window and door. This is a project that a homeowner with a reasonable wiring knowledge can do alone. Save the cost of professional installation. Very reliable system. I’ve had zero problems after six months. There really aren’t any other options for retrofitting an older alarm system. Ring is about the only one out there. CONS: You can’t connect wired motion detectors or smoke/fire detectors to this system. Ring sells alternative devices for this, but it would be nice if you could use the devices that are already wired into your house. Each retrofit kit only supports 8 alarm circuits. I installed two retrofit kits for my system, but I really needed three. It would be nice if they was a larger capacity kit with more circuits. The retrofit modules are battery powered only. Ring claims the batteries will last years, and my batteries still show full charge after six months. However, it would be nice if you could power the modules directly, and avoid the cost and hassle of battery replacement. I was able to use the power in my old alarm system to power my new Ring keypads using the existing wiring in the walls. This isn’t an option with the retrofit kit. No Siri/ Homekit integration. Ring devices only work with Alexa. If you’re a HomeKit user, you’re out of luck. However the Ring app is very useable. This hasn’t been a problem for me.
Review: A must have if you’re replacing an old wired alarm with a Ring alarm - This diminutive gadget (it’s roughly the size of a stack of 4 CD jewel cases) is designed to allow you to integrate legacy sensors from an existing old alarm system into a Ring wireless alarm system. It attaches to the Ring base wirelessly, a very simple process; and then you can connect the sensor wires to its terminals, it supports up to 8 zones. For more zones, you can add more extenders. Door and window sensors do not require any special treatment, but motion and smoke detectors will require a 12V supply with battery backup. I found an inexpensive 12V UPS that is perfect for this, although the problem is when it fails it will trigger the alarm... The huge benefit of this device, though, is that it lets you use all the existing wired sensors: no running wires, no batteries, no problem (well, the batteries in the extender) Setup is super simple thanks to the well designed app. Go to the Devices section, select the extender, and you will see all the ones. Any zone with a sensor connected is configurable, the others are grayed out. To configure a zone, you select it and then open and close the door or window; you can then name and save the zone, and it becomes enabled. Couldn’t be simpler. Very well designed device, great software, if you’re contemplating Ring and your house has an existing wired alarm system don’t hesitate, make sure you buy this extender. It’s a little pricey but worth it. Buy Ring motion detectors and use your existing door and window sensors! Very highly recommended.

## Features

- 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 Retrofit Alarm Kit.
- When connected to Retrofit Alarm Kit, doors or windows with existing wired contact sensor zones will function as 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.
- See more. Know more. Protect more. - Record 24/7 on your eligible cameras, scroll back in time to rewatch what you missed, get alerts for people and package, and so much more with an compatible Ring Home subscription (sold separately).
- Works with Alexa to arm, disarm, and check the status of your Ring Alarm system with a compatible Ring Home subscription (sold separately).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Power | 2 x 3V Lithium 123. Batteries included, non-rechargeable |
| Battery life | 5 years with 100 events per day |
| Operating Conditions | 32° F to 120° F (0°C to 49°C) |
| Dimensions | 4.53 in. x 4.53 in. x 1.0 in. (11.5 cm x 11.5 cm x 2.54 cm) |
| Installation | Professional installation recommended. Mounts to walls with provided double-sided tape or mounting hardware. |
| Connectivity | Z-Wave (250-foot range to Base Station) |
| Compatibility | The Ring Retrofit Alarm Kit design supports a maximum resistance of 5200 ohms under all supported operating environments. This is intended to be compatible with a typical wired home alarm install, which commonly use 4700 ohms, 1000 ohms or 2000 ohms end of line resistors. Note that the amount of wire used in most wired home alarm installs does not add a significant amount of resistance. (for example: 500’ of wire adds about 12 ohms of resistance.) |
| Setup requirements | Ring Alarm Security Kit |
| Warranty and service | 1-year limited warranty and service included. Use of Ring Alarm Kit is subject to the terms found here. |
| Support | Click here to view more information on the Ring Alarm Kit support page. |
| Disclaimers | 1Ring Alarm and all Ring Alarm accessories require a subscription for in-app features and digital notifications, including but not limited to: digital arming / disarming and integration with other Ring, Echo, Alexa, and third party products. Subscription sold separately. View Ring Protect Plans for pricing and details. Customer reviews may reference features that require a subscription.
2Ring Alarm Professional Monitoring service is available only within the U.S. (all 50 states, but not U.S. territories), and is included with a Ring Protect Pro Plan (subscription required, sold separately). Additional charges may apply in areas that require permits or guard response service for alarm verification. Enrollment required.
4A compatible Ring Protect subscription required, sold separately. Alarm Cellular Backup uses a third-party carrier. Coverage will vary.
9Actual savings vary depending on insurance carrier and policy. |

## Images

![Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required - Image 1](https://m.media-amazon.com/images/I/21u9WSZRnML.jpg)
![Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required - Image 2](https://m.media-amazon.com/images/I/4105rWkBjqL.jpg)
![Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required - Image 3](https://m.media-amazon.com/images/I/41BNAQquxAL.jpg)
![Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required - Image 4](https://m.media-amazon.com/images/I/41GtkXG2IiL.jpg)
![Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Ring Smart System | Compatible with Most Door & Motion Sensors| Pro Install Recommended | Base Station Required - Image 5](https://m.media-amazon.com/images/I/41mWQJhYUeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Multiple Retrofit Kits: 6 Months DIY Experience
*by R***R on July 4, 2024*

This review is for the Ring Retrofit Kit only. Other components of the Ring Alarm System are reviewed elsewhere. I decided to install the Ring Retrofit kit to replace the legacy alarm system that came with my home. My original system had 20+ alarm circuits. I installed two retrofit kits to transfer 16 of the existing circuits to a new Ring Alarm system. This was a very doable DIY project. It will help if you have a clear understanding of your existing system. Find the wiring diagram for your old system and study it. Take lots of photos and label everything. It helps if you make sure all of your alarm circuits are working BEFORE you do the retrofit. I needed to replace two of the magnetic sensors in my windows before I could attempt the retrofit. You use the Ring app to add circuits one at a time. Disconnect the circuit from the existing system, and then connect the wires into the Ring Retrofit module. I needed to add extra length to most of the circuit wires, so you might need a spool of alarm wire, and some wire connectors to complete the circuit. Once the circuit is connected, the app will ask you to open and close the associated window/door for testing. Repeat the process for each sensor circuit that you add. Traditional alarm systems include a resistor in the circuit in order to detect tampering. My system had the resistors in the alarm box, so I could just reconnect the existing wires to the retrofit kit. A lot of reviewers are concerned about the need for resistors. My reading of the Ring documents seem to indicate that any wiring arrangement will work with the retrofit kit (resistor or not), as long as there is not a short circuit or broken wire. PROS: The retrofit kit allows you to use the existing sensors in your home. This not only saves money, but it also gives a “cleaner” look to your home when you don’t have to have clunky wireless sensors attached to each window and door. This is a project that a homeowner with a reasonable wiring knowledge can do alone. Save the cost of professional installation. Very reliable system. I’ve had zero problems after six months. There really aren’t any other options for retrofitting an older alarm system. Ring is about the only one out there. CONS: You can’t connect wired motion detectors or smoke/fire detectors to this system. Ring sells alternative devices for this, but it would be nice if you could use the devices that are already wired into your house. Each retrofit kit only supports 8 alarm circuits. I installed two retrofit kits for my system, but I really needed three. It would be nice if they was a larger capacity kit with more circuits. The retrofit modules are battery powered only. Ring claims the batteries will last years, and my batteries still show full charge after six months. However, it would be nice if you could power the modules directly, and avoid the cost and hassle of battery replacement. I was able to use the power in my old alarm system to power my new Ring keypads using the existing wiring in the walls. This isn’t an option with the retrofit kit. No Siri/ Homekit integration. Ring devices only work with Alexa. If you’re a HomeKit user, you’re out of luck. However the Ring app is very useable. This hasn’t been a problem for me.

### ⭐⭐⭐⭐⭐ A must have if you’re replacing an old wired alarm with a Ring alarm
*by E***A on September 12, 2020*

This diminutive gadget (it’s roughly the size of a stack of 4 CD jewel cases) is designed to allow you to integrate legacy sensors from an existing old alarm system into a Ring wireless alarm system. It attaches to the Ring base wirelessly, a very simple process; and then you can connect the sensor wires to its terminals, it supports up to 8 zones. For more zones, you can add more extenders. Door and window sensors do not require any special treatment, but motion and smoke detectors will require a 12V supply with battery backup. I found an inexpensive 12V UPS that is perfect for this, although the problem is when it fails it will trigger the alarm... The huge benefit of this device, though, is that it lets you use all the existing wired sensors: no running wires, no batteries, no problem (well, the batteries in the extender) Setup is super simple thanks to the well designed app. Go to the Devices section, select the extender, and you will see all the ones. Any zone with a sensor connected is configurable, the others are grayed out. To configure a zone, you select it and then open and close the door or window; you can then name and save the zone, and it becomes enabled. Couldn’t be simpler. Very well designed device, great software, if you’re contemplating Ring and your house has an existing wired alarm system don’t hesitate, make sure you buy this extender. It’s a little pricey but worth it. Buy Ring motion detectors and use your existing door and window sensors! Very highly recommended.

### ⭐⭐⭐⭐⭐ Great System!
*by A***R on June 16, 2025*

This is the device that allowed me to upgrade a 30 year old system to a modern Ring system. I’d hesitated in the past because I didn’t want to duplicate all the hardwired door and window contacts I already had. Not for every DIYer but I found it pretty straight forward to replace a FULL box of old components with a few wires and the retrofit kit. The rest of the Ring components were very easy to install and setup. Works Great!

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vu/products/167462891-ring-retrofit-alarm-kit-convert-wired-security-contact-sensors-to](https://www.desertcart.vu/products/167462891-ring-retrofit-alarm-kit-convert-wired-security-contact-sensors-to)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-14*