Head to head · 2 products

FamiLock E40 vs Smart Lock E31

Verified specs side by side. The green tick marks the better value on each measurable row.

Comparing 2 products
FamiLock E40
FamiLock E40—Score pending
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Smart Lock E31
Smart Lock E31—Score pending
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View specs
The short verdict

Scores pending

We haven’t scored these yet. Use the measured differences and full specs below.

FamiLock E40
—
Smart Lock E31
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FamiLock E40
    Full specs →
    Smart Lock E31
      Full specs →
      At a glance

      Key differences

      Measured differences only. Ties and tiny gaps are left out.
      Full specs

      Side-by-side specifications

      Performance1 difference
      Storage (max)
      32GB
      No
      Camera2 differences
      2K video
      Yes
      No
      HD video
      Yes
      No
      Battery & charging2 differences
      Capacity
      6 months
      14 months
      Backup Battery
      800mAh built-in backup battery
      USB-C emergency charging
      Connectivity
      Bluetooth
      Yes
      Yes
      General4 differences
      Doorbell
      Yes
      No
      Thread
      No
      Thread Border Router required
      Motion Detection
      Yes
      No
      Night Vision
      Yes
      No
      Where to buy

      Specs verified against manufacturer data. Prices in USD before tax; we may earn a commission from qualifying purchases.

      Community

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