# TLDR Review: eufy Smart Lock E31

*Published: 2026-03-14 | Updated: 2026-03-14 | Source: https://shopsavvy.com/reviews-tldr/eufy-smart-lock-e31*

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## Product: eufy Smart Lock E31
**Brand:** eufy Security

## Pros
- Installation is extremely easy and fast, typically under 15 minutes if the door hole size matches.
- Fingerprint scanner is lightning-fast, reliable, and more convenient than entering codes.
- Auto-lock feature enhances security by ensuring the door locks automatically.
- Built-in WiFi means no external adapters are needed, offering an all-in-one, clean setup.
- Integrates well with Apple Home Ecosystem, Alexa, and Google Assistant for voice and app control.
- Physical locking and unlocking feel precise, smooth, and quiet compared to many competitors.
- Large rechargeable 10000mAh battery offers long life, eliminating frequent battery changes.
- Attractive, modern design with a sturdy, premium build that isn't bulky.
- Works seamlessly with compatible eufy cameras through the same app for monitoring and control.
- Touchpad and fingerprint configuration is quick, intuitive, and responsive.

## Cons
- Apple Home/Siri integration can be unreliable, especially when the iPhone screen goes off without a HomePod or similar device to maintain the connection.
- Access code management in the app is limited; codes can only be always active or scheduled and require removing/re-adding to change permissions.
- Occasional connection glitches with Alexa voice control, though these are typically fixable by re-syncing the device.
- Cannot connect or integrate with Home Assistant, limiting smart home ecosystem flexibility.
- Does not support use of existing physical keys due to replacing the entire deadbolt, so you must carry a separate key.
- Long-term battery reliability remains unknown as users have yet to confirm sustained performance over extended use.

## Bottom Line

The eufy Smart Lock E31 shines with fast fingerprint access, easy installation, and solid integration with major smart home platforms like Apple Home, Alexa, and Google. If you're looking for a keyless solution with robust auto-lock, a large rechargeable battery, and a sleek modern design, this lock is a strong contender. However, if you rely heavily on Apple Home/Siri or need advanced app-based access code flexibility, you might find some frustrations. Also, it won't work with Home Assistant or your existing door keys, so keep that in mind when deciding. Overall, it’s a reliable, stylish smart lock well suited for those invested in mainstream smart home ecosystems.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Installation is extremely easy and fast, typically under 15 minutes if the door hole size matches. | Apple Home/Siri integration can be unreliable, especially when the iPhone screen goes off without a HomePod or similar device to maintain the connection. |
| Fingerprint scanner is lightning-fast, reliable, and more convenient than entering codes. | Access code management in the app is limited; codes can only be always active or scheduled and require removing/re-adding to change permissions. |
| Auto-lock feature enhances security by ensuring the door locks automatically. | Occasional connection glitches with Alexa voice control, though these are typically fixable by re-syncing the device. |
| Built-in WiFi means no external adapters are needed, offering an all-in-one, clean setup. | Cannot connect or integrate with Home Assistant, limiting smart home ecosystem flexibility. |
| Integrates well with Apple Home Ecosystem, Alexa, and Google Assistant for voice and app control. | Does not support use of existing physical keys due to replacing the entire deadbolt, so you must carry a separate key. |
| Physical locking and unlocking feel precise, smooth, and quiet compared to many competitors. | Long-term battery reliability remains unknown as users have yet to confirm sustained performance over extended use. |
| Large rechargeable 10000mAh battery offers long life, eliminating frequent battery changes. |  |
| Attractive, modern design with a sturdy, premium build that isn't bulky. |  |
| Works seamlessly with compatible eufy cameras through the same app for monitoring and control. |  |
| Touchpad and fingerprint configuration is quick, intuitive, and responsive. |  |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*