Home Ring Alarm Contact Sensor (2nd Gen) (2-Pack)

Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White

Price range: $29.98–39.98
Brand: Ring
Category: Monitor
The Ring is a monitor. It features a display.
PQS: 100 (computed 2026-03-14 07:05:02.392216+00:00)
GTIN-14: 00842861111088
Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White

Key specs

Only non-null specs are shown

Offers

Retailer SKU Price Stock Offer Last seen
Best Buy 6403968 29.98 USD Out of stock View offer → 2026-03-14 02:05:59.107506+00:00
Newegg 0YH-01C3-001S0 39.98 USD In stock View offer → 2026-03-13 02:19:37.697574+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 29.98 USD Out of stock 2026-03-14 02:05:59.107506+00:00
newegg 39.98 USD In stock 2026-03-13 02:19:37.697574+00:00
bestbuy 29.98 USD Out of stock 2026-03-13 02:14:31.336065+00:00
newegg 39.98 USD In stock 2026-03-12 02:23:31.959970+00:00
bestbuy 29.98 USD In stock 2026-03-12 02:07:11.093861+00:00
newegg 39.98 USD In stock 2026-03-11 02:13:17.957802+00:00
bestbuy 29.98 USD In stock 2026-03-11 02:05:04.927520+00:00
newegg 39.98 USD In stock 2026-03-10 02:20:48.720102+00:00
bestbuy 29.98 USD Out of stock 2026-03-10 02:15:18.323516+00:00
newegg 39.98 USD In stock 2026-03-09 02:23:08.293153+00:00
bestbuy 29.98 USD Out of stock 2026-03-09 02:13:27.936791+00:00
newegg 39.98 USD In stock 2026-03-08 05:46:21.136818+00:00
newegg 39.98 USD In stock 2026-03-06 08:40:34.481932+00:00
bestbuy 29.98 USD Out of stock 2026-03-06 05:49:19.916885+00:00
newegg 39.98 USD Out of stock 2026-03-03 02:19:03.643434+00:00
bestbuy 29.98 USD Out of stock 2026-03-03 01:40:28.924195+00:00
newegg 39.98 USD Out of stock 2026-03-02 10:42:34.283913+00:00
bestbuy 29.98 USD Out of stock 2026-03-02 07:25:23.989481+00:00

Full specs

Show full spec table
Reconciled at2026-03-06 10:20:22.157613+00:00
Canonical JSON (expand)
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Debug data (expand)
Raw title Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White
Raw brandRing
Raw categoryBest Buy > Smart Home > Home Security & Monitoring > Door & Window Security > Door & Window Alarms
Canonical highlights (non-null)
core.title Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White
core.seo_title Ring 4SD2SZ-0EN0
audio.wireless Yes
brand Ring
model 4SD2SZ-0EN0
camera.sensor Magnetic
gtin14 00842861111088
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/6403/6403968_sd.jpg
physical.depth_in 0.55
physical.width_in 2.09
physical.height_in 1.56
physical.weight_kg 0.09
physical.dimensions_in 1.56 x 2.09 x 0.55 in
warranty.labor 1 Year
warranty.parts 1 Year
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
{
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  "upc": "842861111088",
  "url": "https://api.bestbuy.com/click/-/6403968/pdp",
  "name": "Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White",
  "image": "https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/6403/6403968_sd.jpg",
  "details": [
    {
      "name": "Brand",
      "value": "Ring",
      "values": [
        "Ring"
      ]
    },
    {
      "name": "Model Number",
      "value": "4SD2SZ-0EN0",
      "values": [
        "4SD2SZ-0EN0"
      ]
    },
    {
      "name": "Product Name",
      "value": "Alarm Contact Sensor (2nd Gen) (2-Pack)",
      "values": [
        "Alarm Contact Sensor (2nd Gen) (2-Pack)"
      ]
    },
    {
      "name": "Color",
      "value": "White",
      "values": [
        "White"
      ]
    },
    {
      "name": "Detector Type",
      "value": "Contact",
      "values": [
        "Contact"
      ]
    },
    {
      "name": "Sensor Type",
      "value": "Magnetic",
      "values": [
        "Magnetic"
      ]
    },
    {
      "name": "Wireless",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Wireless Connectivity",
      "value": "Z-Wave",
      "values": [
        "Z-Wave"
      ]
    },
    {
      "name": "Maximum Wireless Range",
      "value": "250 feet",
      "values": [
        "250 feet"
      ]
    },
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      "name": "Works With",
      "value": "Amazon Alexa",
      "values": [
        "Amazon Alexa",
        "Ring"
      ]
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    {
      "name": "App Compatible",
      "value": "Yes",
      "values": [
        "Yes"
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    {
      "name": "Operating System Compatibility",
      "value": "Android",
      "values": [
        "Android",
        "Apple iOS"
      ]
    },
    {
      "name": "Placement",
      "value": "Door",
      "values": [
        "Door",
        "Window"
      ]
    },
    {
      "name": "Power Source",
      "value": "Battery-powered",
      "values": [
        "Battery-powered"
      ]
    },
    {
      "name": "Rechargeable Battery",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Battery Size",
      "value": "CR2032",
      "values": [
        "CR2032"
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    {
      "name": "Number of Batteries Required",
      "value": "2",
      "values": [
        "2"
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    {
      "name": "Replaceable Battery",
      "value": "Yes",
      "values": [
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      "name": "Product Height",
      "value": "1.56 inches",
      "values": [
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      "value": "2.09 inches",
      "values": [
        "2.09 inches"
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    {
      "name": "Product Depth",
      "value": "0.55 inches",
      "values": [
        "0.55 inches"
      ]
    },
    {
      "name": "Product Weight",
      "value": "0.2 pounds",
      "values": [
        "0.2 pounds"
      ]
    },
    {
      "name": "Number of Devices Included",
      "value": "2",
      "values": [
        "2"
      ]
    },
    {
      "name": "Warranty - Parts",
      "value": "1 year",
      "values": [
        "1 year"
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      "name": "Warranty - Labor",
      "value": "1 year",
      "values": [
        "1 year"
      ]
    }
  ],
  "features": [
    {
      "feature": "Requires Ring Alarm or Ring Alarm Pro, sold separately."
    },
    {
      "feature": "Get alerts on your phone and tablet when doors or windows are opened."
    },
    {
      "feature": "Monitor your home from any iOS or Android device."
    },
    {
      "feature": "Easy installation with no tools required"
    },
    {
      "feature": "Includes two 3V CR2032 batteries"
    },
    {
      "feature": "Mounts to door and window frames"
    },
    {
      "feature": "Get 24/7 emergency police, fire, and medical response when sensors are triggered when you subscribe to Ring Home Standard or Premium, sold separately, and add Alarm Professional Monitoring* to your Plan."
    }
  ],
  "condition": "New",
  "salePrice": 29.98,
  "categoryPath": [
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      "name": "Door & Window Alarms"
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  "manufacturer": "Ring",
  "regularPrice": 39.99,
  "shippingCost": 5.49,
  "longDescription": "Expand your Ring Alarm system to secure each door and window in your home, and hear chirps as soon as they open. Ring Alarm Contact Sensors mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm and receive mobile alerts from the Ring App so you’ll always be the first to know when something’s ajar.",
  "shortDescription": null,
  "onlineAvailability": false,
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}
Newegg raw specs
raw_specs_text (pretty) — expand
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