GT5BK Smart Lock 4-in-1 Keyless Entry - Weatherproof Wi-Fi Lock

Our review of the GT5BK Smart Lock finds it is best suited for homeowners and rental hosts who want flexible, reliable keyless entry without complex hubs. The single biggest reason to consider this lock is its combination of four distinct access methods - fingerprint, smartphone app, PIN and mechanical key - all wrapped in a weatherproof, heavy-duty package that works with Alexa and SmartThings. Installation is straightforward for standard U.S. doors, and the SMARTSOLITY app gives real-time control for families or short-term rentals.

Key Features

• 4 Smart Access Methods: Fingerprint, app, PIN and key provide multiple ways to unlock the door so users can pick the most convenient method for each situation.
• SMARTSOLITY App: Full remote management lets you add or remove users, assign guest or family roles, and view access logs from anywhere.
• Works with Alexa & SmartThings: Built-in voice assistant compatibility enables hands-free locking and unlocking without a separate hub.
• Weatherproof Durability: IP54 rating plus 200 hours salt spray testing and a robust deadbolt mean dependable performance from -31F to 151F.
• Anti-Peeping & Smudge-Free Touchscreen: Anti-peeping code entry and a matte no-trace surface reduce the risk of passcode observation or smudge-based guessing.
• 100 Unique Passcodes: Support for up to 100 separate codes makes the lock practical for vacation rentals, service staff access, or family members.

Who It's For

The GT5BK is ideal for homeowners who want multiple secure entry options and centralized control, and for Airbnb or rental hosts who need to manage frequent guest access with unique PINs and remote oversight via the SMARTSOLITY app. The no-hub voice compatibility with Alexa and SmartThings also suits smart home users seeking simple voice control.

Those who should look elsewhere include buyers who require the highest commercial security rating beyond ANSI Grade 3 or an integrated ecosystem that specifically demands a proprietary hub. Also consider a different model if your door dimensions fall outside the standard U.S. door compatibility noted in the manual.

Pros & Cons

Pros

• Multiple access methods give flexibility for different household members and scenarios.
• Remote management and access logs through the SMARTSOLITY app make oversight easy for hosts and families.
• Robust weatherproofing and temperature tolerance ensure reliable outdoor performance.
• Anti-peeping entry and a smudge-resistant touchscreen improve daily security practice.

Cons

• ANSI Grade 3 is solid for residential use but not the highest commercial security level.
• Advanced smart home users who rely on a single proprietary hub may prefer a lock designed for that specific ecosystem.

Specifications

Brand	SOLITY
Access Methods	Fingerprint, App, PIN, Mechanical Key
App	SMARTSOLITY (remote management)
Smart Home	Works with Alexa and SmartThings (no hub needed)
Weatherproofing	IP54; passed 200 hours salt spray test
Temperature Range	-31F to 151F (-35C to 66C)
Compatibility	Standard U.S. doors 1-3/8' to 2' thick, 2-1/8' hole diameter

Our Verdict

The GT5BK Smart Lock offers a compelling mix of convenience, durability and remote control that makes it a great value for homeowners and rental hosts. Its four access methods, app management and weatherproof construction deliver practical day-to-day security without excessive complexity, making it an excellent choice for most residential and short-term rental use cases.

Frequently Asked Questions

Can I control the lock remotely?
Yes. The SMARTSOLITY app provides full remote management to add users, view logs and lock or unlock from anywhere.

Does it require a hub to work with voice assistants?
No. The lock integrates directly with Alexa and SmartThings without an additional hub.

Will it fit my door?
It is compatible with standard U.S. doors 1-3/8' to 2' thick and a 2-1/8' hole diameter; auto orientation handles left or right swing.