eufy Security FamiLock E40 Smart Lock with Facial Recognition

Features and specifications in this description are as the brand describes them.

Overview

The eufy Security FamiLock E40 is a smart door lock that combines facial recognition technology with a built-in 2K camera and doorbell. It uses advanced facial recognition with a detection range of 1.3 to 3.3 feet and supports heights from 3.9 to 7.2 feet, storing all data locally. The device is constructed from aluminium and operates via app control with Matter connectivity protocol.

The lock is designed for home use and includes deadbolts, strike plate, exterior keypad, interior assembly, physical keys, and installation hardware. The brand says it is powered by a 15,000mAh rechargeable lithium battery offering up to six months of operation, with an 800mAh backup battery for uninterrupted function. It integrates with the eufy ecosystem and supports Matter for compatibility with Apple Home, Google Home, Alexa and SmartThings, though camera streaming via Matter is not supported.

Key features

• Facial recognition entry: The manufacturer states the system recognises users with or without makeup, glasses or hats, and works across all skin tones, with local data storage for privacy.
• Integrated 2K camera and doorbell: The device is listed with a 2K HD camera offering a 135-degree head-to-toe view for monitoring visitors and deliveries in day and night conditions.
• Dual battery system: According to the brand, the 15,000mAh main battery provides up to six months of use, with an 800mAh backup battery activating automatically when power runs low.
• 60 GHz radar detection: The manufacturer claims the high-precision radar reduces false alarms by 95 per cent by filtering out pets, small objects and wind interference.
• Multiple unlocking methods: The lock includes biometric access, anti-peeping password entry, fingerprint recognition and physical keys.
• Smart home compatibility: The device supports Matter protocol for integration with major smart home platforms, with full features available through the eufy app.