Master Lock 5406D
Score: 75/100
KeyGuard SL-500 Black
Score: 75/100Rankings
The Master Lock 5406D is a portable, over-the-knob key lock box featuring a durable metal body and a set-your-own 4-digit combination. It is designed for users who need a robust, cost-effective solution for temporary key storage without the need for smart features. It is best suited for real estate agents and homeowners who prioritize durability and portability over advanced connectivity.
The KeyGuard SL-500 is a portable punch-button lock box with a spacious interior and alphanumeric keypad for flexible code creation. Its main limitation is a somewhat complex setup process requiring precise button rotation. It is ideal for realtors and property managers needing temporary, portable key access.
| Attribute | | |
|---|---|---|
5 keysbest | — | |
13.34 cmbest | 6.8 cm | |
6.99 cmbest | 2.1 cm | |
3.81 cm | 4 cmbest | |
| ↓ lower better | 0.32 kgbest | 0.45 kg |
35.71 mmbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Durability & Environment(1) | ||
Weather Resistance Rating | Yes, with weather cover | weather_resistant |
Installation & Mounting(1) | ||
Mounting Type | Portable, Over-the-knob | shackle |
Storage & Capacity(1) | ||
Key Capacity (keys) | 5 keys | unlimited keys |
Design & Fit(3) | ||
External Height (cm) | 13.34 cm | 6.80 cm |
External Width (cm) | 6.99 cm | 2.10 cm |
External Depth (cm) | 3.81 cm | 4.00 cm |
Build & Design(2) | ||
Body Material | Durable metal body with vinyl-coated shackle | metal_plastic_coating |
Product Weight (kg) | 0.32 kg | 0.45 kg |
Security & Access(2) | ||
Lock Type | 4-digit numeric | pushbutton |
Shackle Length (mm) | 35.71 mm | unknown mm |
Products in the top-left offer the best value (high score, low price).
Sources lack dedicated expert reviews from major testing organizations. Manufacturer descriptions emphasize reliability for real estate and rentals, highlighting the anti-jamming cavity, weather protection, and portability as strengths for home and rental use.
Limited consumer feedback is available, with one noted 5-star review praising key capacity and ease of use. Common praise is inferred to center on the convenience of storing house keys and the portability of the device.
Professional reviewers praise the KeyGuard SL-500 for its superior storage capacity, intuitive phone-style keypad, and protective coating that prevents door scratches.
Demos simulate a positive user experience, noting the ease of fitting a handful of keys with space left over, but no recurring praise or complaints from actual buyers are documented.
