Master Lock 5400EC Black
Score: 78/100
Master Lock 5406D
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 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.
| Attribute | | |
|---|---|---|
5 keysbest | 5 keysbest | |
15.8 cmbest | 13.34 cm | |
8.3 cmbest | 6.99 cm | |
3.8 cm | 3.81 cmbest | |
| ↓ lower better | 0.45 kg | 0.32 kgbest |
36 mmbest | 35.71 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Durability & Environment(1) | ||
Weather Resistance Rating | weather_resistant | Yes, with weather cover |
Installation & Mounting(1) | ||
Mounting Type | over_the_knob_wall_mount | Portable, Over-the-knob |
Design & Fit(3) | ||
External Height (cm) | 15.8 cm | 13.34 cm |
External Width (cm) | 8.3 cm | 6.99 cm |
External Depth (cm) | 3.8 cm | 3.81 cm |
Build & Design(2) | ||
Body Material | metal_plastic | Durable metal body with vinyl-coated shackle |
Product Weight (kg) | 0.45 kg | 0.32 kg |
Support & Warranty(1) | ||
Warranty Length (years) | lifetime years | Lifetime years |
Security & Access(2) | ||
Lock Type | mechanical_dial | 4-digit numeric |
Shackle Length (mm) | 36 mm | 35.71 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”
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.
