{
  "description": "BuyOnce independent research summary sourced from public manufacturer documentation. No physical testing claimed.",
  "updated": "2026-11-01",
  "market": "United States",
  "count": 21,
  "license": "This dataset summarizes public documentation; source content remains copyrighted by respective publishers. Attribution to BuyOnce requested.",
  "devices": [
    {
      "id": "ring-battery",
      "slug": "ring-battery-doorbell",
      "brand": "Ring",
      "model": "Battery Doorbell",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Without a Ring plan, live viewing and answering remain, but videos are not recorded or saved.",
      "without_plan_recording": "no",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 4.99,
      "plan_annual_usd": 49.99,
      "device_price_assumption_usd": 99,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://ring.com/support/articles/03vq7/Ring-Video-Doorbell-and-Security-Frequently-Asked-Questions?hasLangChanged=true",
        "https://ring.com/plans",
        "https://ring.com/eu/en/products/battery-doorbell"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Paid video history is cloud-based. Real-time notifications and live view remain available without the subscription; live view requires internet."
    },
    {
      "id": "ring-plus",
      "slug": "ring-battery-doorbell-plus",
      "brand": "Ring",
      "model": "Battery Doorbell Plus",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "You can answer visitors live without a paid plan; event-video saving and review require Ring subscription.",
      "without_plan_recording": "no",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 4.99,
      "plan_annual_usd": 49.99,
      "device_price_assumption_usd": 149,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://ring.com/eu/en/products/battery-doorbell-plus",
        "https://ring.com/support/articles/03vq7/Ring-Video-Doorbell-and-Security-Frequently-Asked-Questions?hasLangChanged=true",
        "https://ring.com/plans"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Do not confuse the subscription being optional with stored recordings being available for free."
    },
    {
      "id": "nest-battery",
      "slug": "nest-doorbell-battery",
      "brand": "Google Nest",
      "model": "Nest Doorbell (battery)",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "A limited three-hour event preview window is included; longer stored history requires Google Home Premium.",
      "without_plan_recording": "limited",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 10,
      "plan_annual_usd": 100,
      "device_price_assumption_usd": 180,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.google.com/googlehome/answer/9233159?hl=en",
        "https://store.google.com/us/product/google_home_premium?hl=en-US",
        "https://support.google.com/googlehome/answer/9239727?hl=en"
      ],
      "reviewed": "2026-10-31",
      "limitations": "The battery model does not support 24/7 history even with optional wiring and a paid plan."
    },
    {
      "id": "nest-wired-2",
      "slug": "nest-doorbell-wired-2nd-gen",
      "brand": "Google Nest",
      "model": "Nest Doorbell (wired, 2nd gen)",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Up to three hours of included event video history; extended event history and 24/7 history require eligible Premium tiers.",
      "without_plan_recording": "limited",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 10,
      "plan_annual_usd": 100,
      "device_price_assumption_usd": 180,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.google.com/googlehome/answer/9233159?hl=en",
        "https://store.google.com/us/product/google_home_premium?hl=en-US",
        "https://support.google.com/googlehome/answer/9239727?hl=en"
      ],
      "reviewed": "2026-10-31",
      "limitations": "24/7 video history is an Advanced-tier feature; this calculator preselects Standard, which is not equivalent to 24/7."
    },
    {
      "id": "nest-wired-3",
      "slug": "nest-doorbell-wired-3rd-gen",
      "brand": "Google Nest",
      "model": "Nest Doorbell (wired, 3rd gen)",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Six hours of event video previews (up to ten seconds per clip) included; 30-day history with Standard, 24/7 with Advanced.",
      "without_plan_recording": "limited",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 10,
      "plan_annual_usd": 100,
      "device_price_assumption_usd": 200,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://store.google.com/product/nest_doorbell_wired_3rd_gen?hl=en-US",
        "https://store.google.com/us/product/google_home_premium?hl=en-US",
        "https://support.google.com/googlehome/answer/9239727?hl=en"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Google Home Premium Advanced ($20/month published) is needed for 24/7 history; the selected Standard tier does not include it."
    },
    {
      "id": "blink-gen2",
      "slug": "blink-video-doorbell-2nd-gen",
      "brand": "Blink",
      "model": "Video Doorbell (2nd gen)",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Local clips are possible without a plan when paired with a compatible Sync Module and USB/microSD storage.",
      "without_plan_recording": "conditional",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 70,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.blinkforhome.com/en_US/faq-video-doorbell-gen-2"
      ],
      "reviewed": "2026-10-31",
      "limitations": "The doorbell cannot store clips by itself. The illustrated $50 extras assumption is NOT a current Sync Module quote."
    },
    {
      "id": "wyze-pro",
      "slug": "wyze-video-doorbell-pro",
      "brand": "Wyze",
      "model": "Video Doorbell Pro",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "The Video Doorbell Pro is cloud-only for recording and lacks the local microSD option of Wyze Doorbell v2.",
      "without_plan_recording": "no",
      "record_without_internet": "no",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 94,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.wyze.com/hc/en-us/articles/19799283420699-Wyze-Doorbell-Comparison-Chart",
        "https://support.wyze.com/hc/en-us/articles/46547872366107-What-is-the-microSD-card-size-limit-for-my-Wyze-Cam",
        "https://support.wyze.com/hc/en-us/articles/360046278491-About-Cam-Plus",
        "https://support.wyze.com/hc/en-us/articles/27669593164443-My-Wyze-Video-Doorbell-is-not-recording-Events",
        "https://support.wyze.com/hc/en-us/articles/4408557044507-Can-I-use-Wyze-Video-Doorbell-Pro-if-I-don-t-have-a-doorbell"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Cloud subscription pricing intentionally starts at $0 until you enter the plan you would actually purchase."
    },
    {
      "id": "wyze-v2",
      "slug": "wyze-video-doorbell-v2",
      "brand": "Wyze",
      "model": "Video Doorbell v2",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "A microSD card enables local 24/7 recordings; Wyze explicitly documents continued recording without Wi-Fi.",
      "without_plan_recording": "yes",
      "record_without_internet": "yes",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 40,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.wyze.com/hc/en-us/articles/19767071591963-About-Wyze-Video-Doorbell-v2",
        "https://support.wyze.com/hc/en-us/articles/19834190722843-Will-Wyze-Video-Doorbell-v2-s-microSD-card-record-even-when-offline",
        "https://support.wyze.com/hc/en-us/articles/360046278491-About-Cam-Plus",
        "https://support.wyze.com/hc/en-us/articles/46547872366107-What-is-the-microSD-card-size-limit-for-my-Wyze-Cam"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Initial recording settings require internet. Cloud AI person detection is a separate paid benefit; local recording is not cloud-independent setup."
    },
    {
      "id": "reolink-wifi",
      "slug": "reolink-video-doorbell-wifi",
      "brand": "Reolink",
      "model": "Video Doorbell WiFi",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Reolink documents 24/7 microSD/NVR recording and person detection without internet; phone alerts and remote view stop offline.",
      "without_plan_recording": "yes",
      "record_without_internet": "yes",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 100,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.reolink.com/articles/12704251320345-FAQs-Video-Doorbell-WiFi/",
        "https://support.reolink.com/c/video-doorbell-wifi/"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Reolink says phone push alerts and live view are unavailable without internet for this doorbell; local SD recording continues."
    },
    {
      "id": "reolink-poe",
      "slug": "reolink-video-doorbell-poe",
      "brand": "Reolink",
      "model": "Video Doorbell PoE",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Reolink documents offline motion/person detection and local SD recording, with no mobile push or remote live view offline.",
      "without_plan_recording": "yes",
      "record_without_internet": "yes",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 110,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://support.reolink.com/articles/12703727549721-FAQs-Video-Doorbell-PoE/",
        "https://support.reolink.com/c/video-doorbell-poe/"
      ],
      "reviewed": "2026-10-31",
      "limitations": "PoE/power and compatible network hardware are required. Local functionality is documented; future independent setup is not guaranteed."
    },
    {
      "id": "eufy-e340",
      "slug": "eufy-video-doorbell-e340",
      "brand": "eufy",
      "model": "Video Doorbell E340",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Offers 8 GB on-device event-video storage and playback without a subscription, according to manufacturer documentation.",
      "without_plan_recording": "yes",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 180,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://www.eufy.com/gr-en/video-doorbell-e340"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Physical local storage does not establish that app use, new-device setup or all features work if vendor servers disappear."
    },
    {
      "id": "eufy-c31",
      "slug": "eufy-video-doorbell-c31",
      "brand": "eufy",
      "model": "Video Doorbell C31",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "MicroSD local recording up to 128GB without a required subscription; continuous recording requires wired power.",
      "without_plan_recording": "yes",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 120,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://service.eufy.com/article-description/Video-Doorbell-C31-C30-Storage-Information-FAQ",
        "https://service.eufy.com/article-description/Video-Doorbell-C31-C30-Recording-Features-FAQ",
        "https://www.eufy.com/eu-en/products/t8223311?fliter_category=wifi-doorbell-camera"
      ],
      "reviewed": "2026-10-31",
      "limitations": "24/7 mode applies to wired installation of the C31, not battery operation or the C30."
    },
    {
      "id": "aqara-g4",
      "slug": "aqara-smart-video-doorbell-g4",
      "brand": "Aqara",
      "model": "Smart Video Doorbell G4",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Chime-based local microSD storage up to 512GB. Continuous local recording requires wired power.",
      "without_plan_recording": "yes",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 120,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://www.aqara.com/en/product/smart-video-doorbell-g4/",
        "https://www.aqara.com/en/product/smart-video-doorbell-g4/specs/"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Aqara also offers free cloud snippets, which are not offline or company-death-proof. 24/7 recording needs wired power."
    },
    {
      "id": "tapo-d225",
      "slug": "tapo-d225-video-doorbell",
      "brand": "TP-Link Tapo",
      "model": "Tapo D225",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "Supports microSD recordings to 512GB, with optional Tapo Care cloud plan; continuous video needs hardwired power.",
      "without_plan_recording": "yes",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 100,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://www.tp-link.com/us/smart-home/smart-doorbell/tapo-d225/",
        "https://www.tp-link.com/us/support/faq/2617/"
      ],
      "reviewed": "2026-10-31",
      "limitations": "Tapo Care is optional. Recording without internet for this exact model was not verified, so offline capture is unresolved."
    },
    {
      "id": "unifi-g4-pro",
      "slug": "unifi-g4-doorbell-pro",
      "brand": "Ubiquiti",
      "model": "G4 Doorbell Pro",
      "category": "doorbell",
      "market": "United States",
      "without_plan": "UniFi Protect stores video on a local console instead of a vendor video cloud; it requires compatible system hardware.",
      "without_plan_recording": "conditional",
      "record_without_internet": "unknown",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 300,
      "price_source_status": "illustrative (not live)",
      "source_urls": [
        "https://help.ui.com/hc/en-us/articles/4999240734103-UniFi-Protect-Set-Up-Your-Doorbell",
        "https://help.ui.com/hc/en-us/articles/31234972188951-How-UniFi-Protect-Protects-Your-Data"
      ],
      "reviewed": "2026-10-31",
      "limitations": "$230 in extras is an editable illustration, not a verified price. Remote access can rely on Ubiquiti identity services."
    },
    {
      "id": "oura-ring-4",
      "slug": "oura-ring-4",
      "brand": "Oura",
      "model": "Ring 4",
      "category": "wearable",
      "market": "United States",
      "without_plan": "Three daily scores (Readiness, Activity, Sleep), battery and basic app settings remain; detailed analysis and guidance require membership.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Not established",
      "vendor_independent": "not established",
      "plan_monthly_usd": 5.99,
      "plan_annual_usd": 69.99,
      "device_price_assumption_usd": 349,
      "price_source_status": "Manufacturer-listed entry price on 2026-11-01, may change",
      "source_urls": [
        "https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership",
        "https://ouraring.com/store"
      ],
      "reviewed": "2026-11-01",
      "limitations": "Membership is billed to an account. An included first month is for eligible new members, not each additional ring."
    },
    {
      "id": "oura-ring-5",
      "slug": "oura-ring-5",
      "brand": "Oura",
      "model": "Ring 5",
      "category": "wearable",
      "market": "United States",
      "without_plan": "According to current Oura membership terms, without active membership only the three daily scores, battery and basic settings remain.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Not established",
      "vendor_independent": "not established",
      "plan_monthly_usd": 5.99,
      "plan_annual_usd": 69.99,
      "device_price_assumption_usd": 399,
      "price_source_status": "Manufacturer-listed entry price on 2026-11-01, may change",
      "source_urls": [
        "https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership",
        "https://support.ouraring.com/hc/en-us/articles/50997181300243-Discover-Oura-Ring-5",
        "https://ouraring.com/store"
      ],
      "reviewed": "2026-11-01",
      "limitations": "Membership rules are sourced from Oura's current general policy; individual launch promotions or bundles may change total costs."
    },
    {
      "id": "ringconn-gen-2",
      "slug": "ringconn-gen-2",
      "brand": "RingConn",
      "model": "Gen 2",
      "category": "wearable",
      "market": "United States",
      "without_plan": "RingConn advertises sleep, activity and related monitoring with no mandatory monthly membership.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Not established",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 299,
      "price_source_status": "Manufacturer-listed starting price on 2026-11-01, may change",
      "source_urls": [
        "https://ringconn.com/products/ringconn-gen-2",
        "https://ringconn.com/blogs/guides/ringconn-cost-guide"
      ],
      "reviewed": "2026-11-01",
      "limitations": "No membership fee does not guarantee all future premium services or perpetual app support."
    },
    {
      "id": "ringconn-gen-2-air",
      "slug": "ringconn-gen-2-air",
      "brand": "RingConn",
      "model": "Gen 2 Air",
      "category": "wearable",
      "market": "United States",
      "without_plan": "RingConn advertises essential health and sleep insights without an ongoing membership charge.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Not established",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 199,
      "price_source_status": "Manufacturer-listed starting price on 2026-11-01, may change",
      "source_urls": [
        "https://ringconn.com/products/ringconn-gen-2-air",
        "https://ringconn.com/blogs/guides/ringconn-cost-guide"
      ],
      "reviewed": "2026-11-01",
      "limitations": "Gen 2 Air is not feature-equivalent to Gen 2; do not compare them as identical health devices."
    },
    {
      "id": "reolink-rlc-810a",
      "slug": "reolink-rlc-810a",
      "brand": "Reolink",
      "model": "RLC-810A",
      "category": "camera",
      "market": "United States",
      "without_plan": "Records motion or continuous video to microSD, compatible NVR or FTP server without subscription.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Generic Reolink non-battery camera guidance documents SD recording without internet; locally confirm model/firmware.",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": null,
      "price_source_status": "No retailer price used; check official store",
      "source_urls": [
        "https://reolink.com/us/product/rlc-810A/",
        "https://support.reolink.com/articles/900000643803-Does-Reolink-Require-Cloud-Subscription-for-Recording/",
        "https://support.reolink.com/articles/360007170094-Can-Reolink-WiFi-Cameras-Work-Without-WiFi-or-Internet-Connection/"
      ],
      "reviewed": "2026-11-01",
      "limitations": "Reolink product pages and support FAQs disagree on maximum supported microSD capacity across variants/revisions; verify your exact hardware revision."
    },
    {
      "id": "eufy-indoor-e220",
      "slug": "eufy-indoor-e220",
      "brand": "eufy",
      "model": "Indoor Cam E220",
      "category": "camera",
      "market": "United States",
      "without_plan": "On-device human/pet/crying detection and video saved to microSD; optional cloud service available.",
      "without_plan_recording": "not applicable",
      "record_without_internet": "Not established from model documentation reviewed",
      "vendor_independent": "not established",
      "plan_monthly_usd": 0,
      "plan_annual_usd": 0,
      "device_price_assumption_usd": 54.99,
      "price_source_status": "Manufacturer listing observed on 2026-11-01, not a live quote",
      "source_urls": [
        "https://www.eufy.com/products/t8410121"
      ],
      "reviewed": "2026-11-01",
      "limitations": "Manufacturer currently advertises local microSD, optional cloud, and NAS via RTSP. Do not infer internet-loss functionality without a model-specific test."
    }
  ]
}