Master Lock 5400EC Black
Score: 78/100
KeyGuard SL-500 Black
Score: 75/100Rankings
The Master Lock 5400EC is a versatile, portable key safe that offers reliable mechanical security for up to five standard keys. Its primary trade-off is the vulnerability of its shackle to cutting tools and limited capacity for bulky items. It is best suited for realtors and homeowners needing temporary, flexible access solutions.
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 | — | |
15.8 cmbest | 6.8 cm | |
8.3 cmbest | 2.1 cm | |
3.8 cm | 4 cmbest | |
| ↓ lower better | 0.45 kgbest | 0.45 kgbest |
36 mmbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Installation & Mounting(1) | ||
Mounting Type | over_the_knob_wall_mount | shackle |
Storage & Capacity(1) | ||
Key Capacity (keys) | 5 keys | unlimited keys |
Design & Fit(3) | ||
External Height (cm) | 15.8 cm | 6.80 cm |
External Width (cm) | 8.3 cm | 2.10 cm |
External Depth (cm) | 3.8 cm | 4.00 cm |
Build & Design(1) | ||
Body Material | metal_plastic | metal_plastic_coating |
Security & Access(2) | ||
Lock Type | mechanical_dial | pushbutton |
Shackle Length (mm) | 36 mm | unknown mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consistently rate the Master Lock Key Lock Box as a top pick for realtors and homeowners, praising its balance of security, capacity, and price.
Everyday users express high satisfaction with the product's reliability for granting temporary access to service providers, pet sitters, and cleaners.
“Perfect for dog walkers/cleaners-combo never fails in rain”
“Dial gets stiff in cold; needs WD-40”
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.
