Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White

Ring Alarm Contact Sensor 2nd Gen 2 Pack Door Window Security Smart Home System

4.5 (53)

Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White

Overall Rating: 4.4 / 5 (average from multiple review sources, as of 1 Oct 2026)
Based on a total of 137,508 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Price
1 day
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£32.49
Free Delivery

Ring Alarm Contact Sensor 2nd Gen 2 Pack Door Window Security Smart Home System

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Price
Will usually delivered within 3 - 5 working days of receiving cleared payment.
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£32.49
Free Delivery

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

Overall Rating: 4.9 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 1,832,593 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
3 to 12 days
PayPal PayPal Mastercard Mastercard Visa Visa
£35.00
Free Delivery

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

Overall Rating: 4.4 / 5 (average from multiple review sources, as of 18 Oct 2026)
Based on a total of 3,619 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Next Day
PayPal PayPal Mastercard Mastercard Visa Visa
£35.00
Delivery from £19.99

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

Overall Rating: 3.5 / 5 (average from multiple review sources, as of 1 Oct 2026)
Based on a total of 25,136 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
2-5 working days
Mastercard Mastercard Visa Visa
£35.99

Ring Alarm Contact Sensor 2-Pack (2nd Gen), Wireless Door & Window Sensor

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 4 - 10 working days of receiving cleared payment.
Other Other PayPal PayPal Wallet Wallet Mastercard Mastercard Visa Visa Apple Pay Apple Pay Diners Club Diners Club
£39.99
Free Delivery

Ring Alarm 2-Pack Alarm Window and Door Contact Sensor

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 3 - 5 working days of receiving cleared payment.
Other Other PayPal PayPal Wallet Wallet Mastercard Mastercard Visa Visa Apple Pay Apple Pay Diners Club Diners Club
£39.99
Free Delivery
Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White

Cheapest offer

Get alerts straight to your smartphone any time a door or window is opened with the Ring Alarm Contact Sensor 2-pack. Installation is simple -...
£32.49
1 day
onbuy.com

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Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White - Details

▶ Finding you the best price!

We have found 7 prices for Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White. Our price list is completely transparent with the cheapest listed first. Additional delivery costs may apply.

Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White - Price Information

  • Cheapest price: £32.49
  • The cheapest price is offered by onbuy.com. You can order the product there.
  • The price range for Ring 4SD2SZ-0EU0 Alarm Contact Sensor (Gen 2) White is £32.49 to £39.99, with a total of 7 offers.
  • Payment methods: The online shop onbuy.com supports: PayPal, Mastercard, Visa
  • Delivery: The shortest delivery time is 1 day working days offered by onbuy.com.

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User reviews

Our reviews come from Trustami, a service that automatically collects, links, and verifies reviews from various sources such as Google, eBay, Amazon, and Trusted Shops. This gives users a transparent overview of a manufacturer's customer satisfaction.

4.5 out of 5 stars

53 Ratings
5 stars
43
4 stars
3
3 stars
2
2 stars
1
1 star
4
Amazon.nl Kunde

Quick delivery (thanks!). The Product is an expansion of what we have and by scanning the QR codes, the app quickly can connect with those devices. The product was sealed and not damaged. We are quite happy with this brand.

via trustami

Amazon.es Customer

Excellent

via trustami

Amazon.co.uk Customer

Very easy to fit, expensive but they do work very reliably

via trustami

Amazon.fr Customer

Simplicity at installation

via trustami

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