ULTRALOQ U-Bolt WiFi Smart Lock with Door Sensor
- Deadbolt
A wifi deadbolt that skips the bridge box and adds a door sensor for status alerts, aimed at anyone managing multiple guest or cleaner codes rather than a single household key.
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How it ranks among the 10 deadbolts we track
4.3★ across 2,378 Amazon ratings, Bayesian-smoothed toward the category average.
2,378 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
500+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 10 deadbolts we track - how the scorecard works · full deadbolts data report. Confidence: limited - incomplete product information.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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.
Strengths and trade-offs
Drawn from this product's published specifications.
- Built-in 2.4GHz wifi, no separate bridge to buy
- Door sensor reports open/closed status, not just lock state
- Up to 50 scheduled or one-time passcodes for guests
- DIY install with a screwdriver, no drilling or wiring
- Wifi is 2.4GHz only, so router placement and band settings matter
- Lockout mode disables passcodes along with app access
- No customer reviews yet to confirm long-term reliability
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
| Brand | Ultraloq |
|---|
Other Ultraloq deadbolts
How it compares
This product against the closest alternatives we track in deadbolts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| ULTRALOQ U-Bolt WiFi Smart Lock with Door SensorThis product | 4.3 / 5 | 2,378 | 2.7 / 5 |
| Schlage Encode Smart WiFi Deadbolt Lock with Century TrimSchlage | 4.3 / 5 | 16,600 | 4.6 / 5 |
| Kwikset Tustin Front Door Lock Set with Deadbolt and SmartKeyKwikset | 4.8 / 5 | 2,531 | 4.4 / 5 |
| Amazon Basics Electronic Keypad Deadbolt Door Lock with Auto LockAmazon Basics | 4.1 / 5 | 11,600 | 4.4 / 5 |
| eufy Security Smart Lock C220eufy | 4.3 / 5 | 4,200 | 4.3 / 5 |
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Questions about the Ultraloq deadbolts
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What door thickness does the Ultraloq U-Bolt fit?
It is built for US standard doors between 1-3/8 inch (38mm) and 1-3/4 inch (45mm) thick, with a DIY install using just a screwdriver.
Does the U-Bolt need a separate wifi bridge?
No. It connects directly to a 2.4GHz wifi network, though Ultraloq recommends keeping the router within about 70 feet of the lock.
How many passcodes can the U-Bolt store?
Up to 50 custom passcodes, which can be set as permanent, one-time, or scheduled for specific guests or service providers.