eufy Security Smart Lock C220
- Deadbolt
- Voice, App, Remote, Touch
- Deadbolt
- Aluminum
A well-built fingerprint deadbolt with a genuinely useful app and eufy doorbell tie-in, but its IP53 rating and the moisture complaints in its reviews make it a better fit for a covered entry than one exposed to weather.
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How it ranks among the 10 deadbolts we track
4.3★ across 4,200 Amazon ratings, Bayesian-smoothed toward the category average.
4,200 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 10 deadbolts we track - how the scorecard works · full deadbolts data report. Confidence: high - strong rating volume and complete data.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The eufy Security Smart Lock C220 (model T8506) is a wifi fingerprint deadbolt with six ways to unlock, including Apple Watch and voice assistants, built on eight AA batteries and certified BHMA Grade 3 after 100,000 lock and unlock cycles.
- Six unlock methods including fingerprint, Apple Watch, and voice
- BHMA Grade 3 certified after 100,000 lock and unlock cycles
- Self-learning fingerprint sensor improves with repeated use
- Built-in wifi, no separate bridge required
Who it's for
Suits households that want to hand out temporary passcodes to cleaners or pet sitters and, especially, anyone already running eufy doorbell hardware who wants the two tied into one app. Owners in consistently wet or humid climates should weigh the IP53 rating and the moisture complaints below before installing it on an exposed door.
What buyers say
From Amazon customer reviews.
Reviewers consistently praise the quick install (15 to 30 minutes, no drilling), the app's entry log, and the ability to give a cleaner or pet sitter a code that only works on specific days. eufy's customer service is called out by name in more than one review for replacing failed parts or troubleshooting issues directly. The main recurring complaint is a keypad that starts beeping or malfunctioning after rain or on humid mornings, which one owner called a dealbreaker; others note occasional fingerprint misreads, a stubborn latch in cold weather, and an auto-lock timer that doesn't account for someone going in and out repeatedly.
Strengths and trade-offs
Drawn from this product's published specifications.
- Install reported at 15 to 30 minutes with no drilling
- App keeps an entry log and issues temporary codes for cleaners or guests
- Solid, heavy build quality noted across several reviews
- Fingerprint accuracy improves with repeated use for most owners
Performance notes
The fingerprint sensor is built to refine its match with each touch, so accuracy for a given finger is expected to climb over the first weeks of use rather than staying static. Auto-lock runs off a timer counting from the last unlock, and the lock can also fire an alarm if it detects an unusual attempt to open it. Eight AA batteries are rated for around 8 months, closer to 9 months in at least one review, with wifi signal strength to the router affecting the drain.
Specifications
| Brand | eufy |
|---|---|
| Model | T8506 |
| Dimensions & fit | |
| Item Dimensions | 7.7 × 4.5 × 4.4 inches |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Finish Types | Polished |
| Compatibility & installation | |
| Connectivity Protocol | Wi-Fi |
| Included components | |
| Number of Pieces | 1 |
| Unit Count | 1 |
| Number of Packs | 1 |
| Included Components | 2*keys, 8*AA batteries, exterior assembly and interior assembly, install sets and mountain plate |
| Other details | |
| Control Type | Voice, App, Remote, Touch |
| Lock Type | Deadbolt |
| Number of Items | 1 |
| Lock Keying System | Keyed Different |
| Additional Features | 6‑way unlocking, 8‑month battery life, eufy ecosystem integration, real‑time notifications, easy installation, durable & waterproof design, wide compatibility, Auto-Lock, built‑in Wi‑Fi control, self‑learning AI fingerprint |
| Recommended Uses For Product | Apartment Door, Office Door, Front Door, Entry Door, Exterior Door |
| Style Name | Deadbolt |
| Shape | Modern |
| Item Highlight | Built-in Wi-Fi, App Remote Control, Up to 8-Month Battery, Front Door Smart Lock Deadbolt, IP53 Waterproof, BHMA Grade 3 |
How it compares
This product against the closest alternatives we track in deadbolts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| eufy Security Smart Lock C220This product | 4.3 / 5 | 4,200 | 4.3 / 5 |
| Schlage Encode Smart WiFi Deadbolt Lock with Century TrimSchlage | 4.3 / 5 | 16,600 | 4.6 / 5 |
| Kwikset Tustin Front Door Lock Set with Deadbolt and SmartKeyKwikset | 4.8 / 5 | 2,531 | 4.4 / 5 |
| Amazon Basics Electronic Keypad Deadbolt Door Lock with Auto LockAmazon Basics | 4.1 / 5 | 11,600 | 4.4 / 5 |
| ULTRALOQ Bolt SE Wi-Fi Smart LockUltraloq | 4.3 / 5 | 10,200 | 4.3 / 5 |
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Questions about the eufy T8506
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How long do the batteries last in the eufy C220?
It runs on 8 AA batteries rated for about 8 months, and one long-term reviewer reported roughly 9 months before needing a change.
Does the eufy Smart Lock C220 need a separate hub?
No, it has built-in wifi and connects directly to the eufy Security app without an extra bridge.
Is the eufy C220 fully waterproof?
It carries an IP53 rating, and some reviewers report keypad issues after heavy rain or high humidity, so it is better suited to a covered entry than one fully exposed to weather.