Eufy Smart Lock E40 Packs 2K Camera, Matter Support
Eufy’s CES 2026 announcements weren’t just about cameras. Alongside the Video Doorbell S4 and Solar Wall Light Cam S4, the Anker-owned brand introduced the Smart Lock E40 — a deadbolt with a built-in 2K camera, facial recognition and Matter support, priced at $299 and slated for sale in Q1 2026.
A lock that’s also a camera
The E40’s defining feature is the integrated 2K camera with a wide-angle lens. It captures who’s at the door with night vision, and facial recognition can identify familiar faces — effectively folding a doorbell camera’s core job into the lock itself. For homeowners who want video verification without mounting a separate camera, it’s an elegant consolidation.
Serious battery reserves
Smart locks with cameras are notoriously power-hungry, and Eufy answered with sheer capacity: a 15,000mAh main battery supplemented by an 800mAh backup cell. That’s an order of magnitude more than the AA or CR123A setups in most competitors, suggesting Eufy expects the camera to be used heavily without turning battery swaps into a monthly chore.
Matter for ecosystem freedom
The E40 supports the Matter standard, ensuring compatibility with Apple, Amazon, Google and other platforms rather than locking buyers into one ecosystem. In 2026, that’s rapidly becoming the baseline expectation for a premium smart lock — but it’s still worth calling out, since many camera-equipped locks remain tied to their maker’s app.
The catch: not everywhere
One disappointment: the E40 was not expected to be available in the UK at launch, limiting its initial market to regions like the US. Eufy’s launches have historically staggered across regions, so broader availability may follow — but for now, it’s a North America-first product.
Why it matters
The E40 sits at the intersection of two trends: locks getting smarter (cameras, biometrics) and the industry standardizing on Matter. A $299 lock that verifies visitors by face, runs on a massive battery and talks to every major platform is a strong package — and it puts pressure on rivals like Yale and Aqara, whose 2026 flagships emphasize hands-free entry over onboard video.
It also fits Eufy’s broader no-subscription philosophy. Like the brand’s cameras, the E40 processes intelligence locally rather than funneling users into a monthly plan — a consistent differentiator as Ring and Arlo lean harder into paid AI tiers.
Outlook
Camera locks remain a niche — most buyers still choose between a smart lock and a video doorbell separately. But as the hardware converges, the E40 makes a credible case for doing both jobs with one device. Real-world battery life and facial recognition accuracy will decide whether that case holds up.