Master Lock 6400EURLJENT Professional Bluetooth Smart Padlock [Bluetooth Compatible with Smartphones] [Long Shackle]…
Best for
Best weatherproof hanging shackle
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$209.94
Updated Jun 27, 2026 · 1 min read
![Master Lock 6400EURLJENT Professional Bluetooth Smart Padlock [Bluetooth Compatible with Smartphones] [Long Shackle]…](/_next/image?url=%2Fimages%2Fproducts%2F1d63aa1cf330615a.jpg&w=3840&q=75)
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the limited reviews we read, the Master Lock 6400 professional Bluetooth padlock is positioned as a weatherproof, long-shackle smart lock for outdoor and business applications, a different form factor from the boxed key safes that fill most of this category. Its listing emphasizes smartphone Bluetooth control and durability against the elements. The headline 4.6 average looks strong, but it rests on just 19 ratings, far too few to treat as a stable consensus, and the supplied data included no independent lab tests or specialist-community discussion to corroborate it.
What reviewers liked
- Weatherproof long-shackle design for outdoor use
- Bluetooth smartphone control from an established lock brand
- Built for professional/business applications
- High nominal rating (4.6 average)
Where it falls short
- Extremely thin review base (only 19 ratings) limits confidence
- No independent lab or specialist-community testing in the supplied data
- High price for the form factor
- Padlock rather than a dedicated key-storage box
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Across the limited reviews we read, the Master Lock 6400 professional Bluetooth padlock is positioned as a weatherproof, long-shackle smart lock for outdoor and business applications, a different form factor from the boxed key safes that fill most of this category. Its listing emphasizes smartphone Bluetooth control and durability against the elements.
The headline 4.6 average looks strong, but it rests on just 19 ratings, far too few to treat as a stable consensus, and the supplied data included no independent lab tests or specialist-community discussion to corroborate it. We're including it because it fills a distinct weatherproof hanging-shackle niche, but the signal is genuinely thin and the price is steep, so buyers should treat the rating with caution and seek more first-hand reports before committing.
For a weather-exposed gate, fence, or industrial access point where Bluetooth control is wanted, it's the most relevant option here, with the firm caveat that the evidence base is minimal.
- PROFESSIONAL APPLICATION Vault Enterprise Incl
- heavy duty outdoor padlock for fences, containers, toolbox, construction site access, industrial site (water treatment, telecom antenna) and more
- Master Lock Vault Enterprise
- use your smartphone to open your padlock with the Master Lock Vault Enterprise app or the manual combination entry (available for Android and iOs + web interface)
- Flexible Asset Management
- administrators can give permanent or temporary access to employees, create groups for specific locks or key safes or create a real customized access-system
- High Security Padlock
- Wide Zinc lock body with complete rubber bumper and 256 bit military grade encryption; boron alloy shackle offering maximum resistance to cutting and sawing
- Weather Resistance
- Weather cover provides enhanced weather resistance against snow, rain and temperature extremes ; -40 C to +70 C.SPECIFICATIONS: padlock (H x W x D) 16,4 x 6,2 x 4,3 cm ; shackle (A x B x C) 6 x 2,3 x 0,9 cm
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