ULTRALOQ U-Bolt WiFi Smart Lock with Door Sensor

Overview

The Ultraloq U-Bolt is a wifi deadbolt for US standard doors 1-3/8 to 1-3/4 inches thick, built around six ways to unlock (app, passcode, eKey, voice, web portal, or the included mechanical keys) plus a bundled door sensor for status alerts.

Where many smart deadbolts route through a separate bridge, the U-Bolt connects straight to a 2.4GHz network and skips that extra box, though it also means the router needs to sit within about 70 feet of the door. The included door sensor is a genuine differentiator here, flagging when the door itself is left open rather than just reporting the lock state. Lockout mode is worth understanding before travel: it disables every electronic unlock method at once, passcodes included, so anyone relying on a code alone is shut out until it is turned off.

• Six ways to unlock, including eKey sharing and voice control
• Included door sensor flags an open door, not just lock status
• ANSI/BHMA Grade 1 certified, zinc alloy, IP65 weatherproof
• Fits US standard doors 1-3/8 to 1-3/4 inches thick

Who it's for

Landlords, Airbnb hosts, and households who hand out temporary door access to cleaners or guests will get the most from the 50-code limit and scheduled access options. It suits standard 1-3/8 to 1-3/4 inch doors on a 2.4GHz network; anyone on a 5GHz-only router or a nonstandard door thickness should look elsewhere.

Pros and cons

Performance notes

Auto-lock and auto-unlock rely on the paired smartphone's proximity, while the bundled door sensor separately reports whether the door itself is open or closed and can alert if it's left ajar. Battery monitoring is built in, sending a warning before the standard AA alkaline batteries actually die rather than after. Lockout mode works as a single switch that suspends every electronic unlock path at once, meant for closing the house down while traveling.

Specifications