Compare daily entry, Matter over Thread, UWB, fingerprint, controllers, batteries, door fit, fallbacks, and the price premium.
Bolt SE is the value-first fingerprint and keypad lock. Aqara U400 earns its premium only when compatible household devices can use its UWB approach-unlock workflow and the controller plan is already understood.
Quick answer
Start with ULTRALOQ Bolt SE Smart Lock if your main need is fingerprint and keypad entry with a deliberately chosen matter or wi-fi path. Compare the trade-offs before buying, especially matter over thread requires a compatible controller and thread border router.
Best starting pick
Best for: Fingerprint and keypad entry with a deliberately chosen Matter or Wi-Fi path
Skip if: Matter over Thread requires a compatible controller and Thread border router
Price band: $$
Prices, availability, shipping, coupons, and seller details can change. Always confirm the current product listing and return policy before buying.
Start here if you already know the job you need the product to solve.
ULTRALOQ
Best for
Fingerprint and keypad entry with a deliberately chosen Matter or Wi-Fi path
Check first
Matter over Thread requires a compatible controller and Thread border router
Facts
ASIN B0FQC6VCDW · access
Aqara
Best for
Apple households that want UWB hands-free entry plus local backup methods
Check first
Advanced ecosystem features require compatible controllers and phones
Facts
$$$$ · access
We use manufacturer specs where available, then treat Amazon as a listing-verification step for ASIN, bundle, seller, coupon, and return-window risk.
| Pick | Official specs | Amazon/listing anchor | Version or price risk | Updated |
|---|---|---|---|---|
| ULTRALOQ Bolt SE Smart Lock | 2 sources | ASIN B0FQC6VCDW | Confirm ASIN B0FQC6VCDW, Matter or Wi-Fi technology, finish, seller, and included hardware. | July 2, 2026 |
| Aqara Smart Lock U400 | 1 source | Confirm live listing | Confirm the exact regional version, finish, seller, and included accessories. | June 30, 2026 |
Fingerprint and keypad lead, and its exact connectivity variant matches the home.
Compatible UWB phones and hands-free approach unlocking justify the premium.
Door fit, Thread coverage, controller ownership, or backup entry is unresolved.
Fingerprint and keypad access cover most daily entries. Confirm the exact Matter or Wi-Fi variant and required controller path before treating a low price as a complete system.
Choose U400 when approach-based unlocking is the feature the household actually wants—not merely because it has more entry methods.
Measure the deadbolt and keep a dependable physical or local entry path. A smart-home logo cannot correct an incompatible or binding door.
Spend more when the upgrade adds a dependable entry method your household will use, while preserving key, keypad, or emergency access.
Spend less when fingerprint or keypad access solves the problem and UWB, Home Key, or advanced automation would add unused complexity.
automation
Understand Matter vs Zigbee vs Thread, including radios, controllers, border routers, hubs, compatibility, and offline control.
access
Measure the door, map every controller, and preserve a dependable entry method before replacing a deadbolt.
access
Map lock variant, Matter controller, Thread border router, phone, ecosystem, remote access, multi-admin sharing, batteries, and physical fallback.
ULTRALOQ
A variant-aware guide to the Bolt SE fingerprint deadbolt, covering Matter over Thread versus Wi-Fi connectivity, controller requirements, entry methods, battery routine, weather rating, door measurements, and physical-key fallback.
Best for: Fingerprint and keypad entry with a deliberately chosen Matter or Wi-Fi path
Aqara
A research-based buying guide to Aqara's UWB deadbolt, with the controller, phone, door-fit, battery, and regional-version checks that determine whether its hands-free entry features make sense.
Best for: Apple households that want UWB hands-free entry plus local backup methods
No. A compatible Matter controller and Thread border router are still required for the intended ecosystem path.
No. UWB can provide more precise proximity information on supported devices; generic auto-unlock approaches can use different signals and behavior.