# eufy Smart Lock E40

*eufy / T85M0J11*

> The eufy Smart Lock E40 is a smart lock with face recognition entry, a 2K camera and a built-in doorbell, with Matter support. It works with HomeKit, Google Assistant, Alexa and SmartThings. It suits HomeKit, Google Home, Alexa and SmartThings users through an integration (the maker's cloud).

- Canonical page: https://smarthomecanon.com/devices/eufy-smart-lock-e40
- Last checked: 2026-10-13

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [eufy](https://smarthomecanon.com/brands/eufy) |
| Category | Lock |
| Model numbers | T85M0J11 |
| Status | Current[^1] |
| Type | Video lock[^1] |
| Unlock methods | Face recognition[^1] |
| Power | Rechargeable battery, up to 6 months[^1] |
| Matter | Matter[^1] |
| Voice and smart home | HomeKit, Google Home, Alexa, SmartThings[^1] |

## Integration paths

**How the eufy Smart Lock E40 connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | eufy Security app, Wi-Fi network[^1] | unknown | unknown |

**Platform support for the eufy Smart Lock E40**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Wi-Fi cloud | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Via integration[^1] |  |
| Wi-Fi cloud | [Google Home](https://smarthomecanon.com/platforms/google-home) | Via integration[^1] |  |
| Wi-Fi cloud | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Via integration[^1] |  |
| Wi-Fi cloud | [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) | Via integration[^1] |  |

## Related pages

- [eufy smart locks](https://smarthomecanon.com/lines/eufy-smart-locks) (line)
- [eufy](https://smarthomecanon.com/brands/eufy) (brand)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) (platform)

## Sources

[^1]: Smart Lock E40 product page, eufy US store. https://www.eufy.com/products/t85m0j11 (manufacturer, checked 2026-10-13)