2-Pack Alarm Window and Door Contact Sensor (Certified Refurbished) - White
2-Pack Alarm Window and Door Contact Sensor (Certified Refurbished) - White

2-Pack Alarm Window and Door Contact Sensor Certified Refurbished

$33.99 $39.98

Take up to 12 months to pay with no interest and no late fees. Prequalify now.

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Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. A Certified Refurbished 2-Pack Alarm Window and Door Contact Sensor is refurbished, tested, and certified to look and work like new.  

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*Requires the Ring Alarm Security Kit.

*Ring Alarm and the professional monitoring service are available and ship only within the U.S. (excluding American Samoa, Guam, Northern Mariana Islands, Puerto Rico, the U.S. Virgin Islands and Canada).

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Make Sure the Doors and Windows Are Shut

Ring Alarm Contact Sensors easily mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm Base Station and receive mobile alerts from the Ring app whenever your doors or windows open. You’ll always be the first to know when something’s ajar.

  • Requires the Ring Alarm Security Kit
  • Triggers your Alarm when someone tampers with Contact Sensors
Make Sure the Doors and Windows Are Shut

Tech Specs - Contact Sensor

Size Arrow Icon

2.09 in. X 1.12 in. X 0.55 in.

Power and Connectivity Arrow Icon

2 CR2032 Coin cell batteries

Operating Conditions

32°F to 120°F (0°C to 49°C)


Z-Wave (250-foot range to Base Station open air, line of sight)

Installation Arrow Icon
Operating Conditions

Indoor Use


Mounts to doors and windows

Maximum Distance Between Magnet and Sensor

1 inch. Leave 1/2" space on non-magnet side to access battery compartment.

Setup Requirement

Requires Ring Alarm or Alarm Pro (sold separately)

General Arrow Icon

1Ring Alarm and all Ring Alarm accessories requires a subscription for in-app features and digital notifications, including digital arming/disarming. Subscription sold separately. View ring.com/protect-plans for pricing and details.

2Free trial is not applicable for locations with an existing Ring Protect Plus or Protect Pro subscription. Terms and limitations apply. See Ring Protect Subscription Plans for more information.

3A compatible Ring Protect subscription is required to enroll in the Ring Alarm professional monitoring service. Professional monitoring service is available only within the U.S. (all 50 states, but not U.S. territories) and in Canada (excluding Quebec). Ring does not own its own professional monitoring center. Smoke and carbon monoxide monitoring is not available for a business or commercially zoned address. See Ring Alarm licenses at: ring.com/licenses

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