Ring Car Alarm Sensor — OBD-II Vehicle Tracker

Ring Sensors: Car Alarm is a plug-in vehicle sensor that detects impacts and door openings, tracks your car’s location, and sends real-time alerts using Amazon Sidewalk without a required subscription.

This compact Ring device connects to your vehicle’s OBD-II port for power while driving and includes a rechargeable backup battery for up to seven days parked. Designed for straightforward installation with no tools or wiring, the sensor communicates event notifications and periodic location updates through the Ring app. Built to integrate with Amazon Sidewalk, it leverages a neighborhood network so your car’s location can be reported even when cellular coverage is limited, all without a recurring monthly fee.

How does the Ring Car Alarm alert me about incidents?

The sensor monitors impacts, door openings, and other disturbances, sending push notifications to your Ring app so you can respond quickly. Alerts include the type of event and a timestamp; you can review the event history inside the app.

• Real-time push notifications for impacts and door activity
• Event timestamps and history stored in the Ring app
• Customizable alert settings to reduce nonessential notifications
• Works with nearby Ring devices and Sidewalk to improve event reporting

What location information does the sensor provide?

The device reports your vehicle’s approximate location in the Ring app with periodic updates while parked and more frequent updates when driving. Location data is intended for recovery and monitoring; it uses a combination of Sidewalk network handoffs and the sensor’s internal reporting to display where the car was last seen.

• Map view inside the Ring app showing last known position
• Periodic location updates when parked; continuous updates while driving
• Sidewalk-enabled neighborhood relay helps report locations beyond direct connection range
• No ongoing subscription required for location reporting

How do I install the Ring Car Alarm in my vehicle?

Installation is a simple plug-and-play process: insert the sensor into your vehicle’s OBD-II port—no tools, no wiring, and no professional installation required. The unit charges while you drive and automatically switches to its built-in battery when the vehicle is off.

• Plugs into standard OBD-II diagnostics port found in most cars
• Ready to use out of the box with guided setup in the Ring app
• Built-in backup battery provides up to seven days of operation while parked
• Compatible with a wide range of makes and models; check compatibility in the app

What network technologies does it use and are there fees?

The sensor uses vehicle power, its internal battery, and Amazon Sidewalk to relay events and locations through the Ring ecosystem. There is no required monthly subscription to receive alerts, location updates, or basic functionality, though optional Ring subscriptions may add cloud features.

• Powered by OBD-II while driving; internal battery while parked
• Built on Amazon Sidewalk to extend neighborhood-level connectivity
• No mandatory monthly fees for alerting or location features
• Optional Ring Protect plans remain available for extended cloud services

Who is this for: Ring Sensors: Car Alarm is aimed at vehicle owners who want a low-effort, no-subscription way to monitor impacts, door activity, and a car’s general location. It’s well suited to commuters, shared-vehicle owners, and anyone who wants added situational awareness for a parked vehicle without installing wired alarms or paying monthly monitoring fees. Check the Ring app for vehicle compatibility before purchase to ensure full feature support for your make and model.