Updated October 2026
Data from the official Eufy and ULTRALOQ sites.
2026 verdict
Across the 2026 comparison, ULTRALOQ Bolt Pro earns the nod over Eufy FamiLock E40 on the strength of price, connectivity, and Lock/Unlock system.
Its clearest strengths are price, connectivity, and Lock/Unlock system, and it still looks stronger on its broader overall balance. Eufy FamiLock E40 remains a niche alternative if warranty and doorbell matter more than the rest of the comparison. That is why the final call still favors ULTRALOQ Bolt Pro.
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| Feature | Eufy FamiLock E40 | ULTRALOQ Bolt Pro | Winner |
|---|---|---|---|
| Price | $349.99 | $269.99 | ULTRALOQ Bolt Pro |
| Warranty | 1.5 years | 18 months | Eufy FamiLock E40 |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi, Bluetooth, Thread Protocol, Other | ULTRALOQ Bolt Pro |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, Physical Key | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | ULTRALOQ Bolt Pro |
| Doorbell | YES | NO | Eufy FamiLock E40 |
| Weather Resistance | IP65 | IP65 | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| One-Time Password | YES | YES | Tie |
| Periodic Password | YES | YES | Tie |
| Local Control | YES | YES | Tie |
$349.99
- + Warranty: 1.5 years
- + Doorbell: YES
- - Price: $349.99 vs $269.99
- - Connectivity: 2.4 GHz WiFi, Bluetooth vs 2.4 GHz WiFi, Bluetooth, Thread Protocol, Other
Winner
$269.99
- + Price: $269.99
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Thread Protocol, Other
- + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
- - Warranty: 18 months vs 1.5 years
- - Doorbell: NO vs YES
Frequently Asked Questions
Which is better overall: Eufy FamiLock E40 or ULTRALOQ Bolt Pro?
ULTRALOQ Bolt Pro has the stronger overall profile in this comparison, especially for price, connectivity, and Lock/Unlock system.
What is the biggest difference between Eufy FamiLock E40 and ULTRALOQ Bolt Pro?
Price is one of the clearest differences: Eufy FamiLock E40 lists $349.99, while ULTRALOQ Bolt Pro lists $269.99.
Which one looks better on price?
Eufy FamiLock E40 is listed at $349.99, while ULTRALOQ Bolt Pro is listed at $269.99. ULTRALOQ Bolt Pro (better spec).
Who should buy Eufy FamiLock E40?
Choose Eufy FamiLock E40 if your priority is warranty and doorbell and that matters more than price.
Who should buy ULTRALOQ Bolt Pro?
Choose ULTRALOQ Bolt Pro if your priority is price and connectivity and that matters more than warranty.
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Compare all 57 Door Locks side by side
You are looking at two of them. The full table lines up all Door Locks in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 57 Door Locks
- 56 specs compared
- 52 filters
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4G Camera S230
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4G LTE Cam S330
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Cam S3 Pro
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Cam S330
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Cam S4
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eufyCam C35
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eufyCam C37
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Indoor Cam C120
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Indoor Cam E220
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Indoor Cam E30
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Indoor Cam S350
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Outdoor Cam E210
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Outdoor Cam E220
- Cameras
PoE Bullet-PTZ Cam E50
- Cameras
SoloCam E30
- Cameras
SoloCam E42
- Cameras
SoloCam S220
- Cameras
SoloCam S230
- Cameras
SoloCam S340
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TrackLight Cam S1
