
Kidde AccessPoint
Score: 78/100
Master Lock 5440EC
Score: 85/100Rankings

The Master Lock 5440EC is a portable, smart key lock box designed for realtors and property managers who need flexible, temporary access control. Its key strength lies in its Bluetooth connectivity and app integration, allowing for tamper and low-battery alerts. While it lacks the permanent stability of wall-mount options, it is ideal for short-term rentals and property showings.

The Kidde AccessPoint 001166 is a portable, push-button key safe designed for flexible, tool-free installation on fences or railings. While it offers convenient access for service personnel, its mechanical buttons are vulnerable to manipulation, limiting its security rating. It is ideal for realtors and property managers needing temporary, low-tech key access.
| Attribute | ![]() | ![]() |
|---|---|---|
3 keys | 5 keysbest | |
17.8 cmbest | 12.2 cm | |
8.1 cm | 8.3 cmbest | |
6.6 cmbest | 2.9 cm | |
| ↓ lower better | 0.45 kgbest | 0.5 kg |
— | 46 mmbest | |
— | 1 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Durability & Environment(1) | ||
Weather Resistance Rating | Weather Resistant | Weather resistant to -40° |
Installation & Mounting(1) | ||
Mounting Type | Portable/Shackle | Portable over-the-knob |
Storage & Capacity(1) | ||
Key Capacity (keys) | 3 keys | 5 keys |
Design & Fit(3) | ||
External Height (cm) | 17.8 cm | 12.2 cm |
External Width (cm) | 8.1 cm | 8.3 cm |
External Depth (cm) | 6.6 cm | 2.9 cm |
Build & Design(2) | ||
Body Material | Zinc Alloy/Rubber | Molded body with vinyl-coated shackle |
Product Weight (kg) | 0.45 kg | 0.5 kg |
Smart Features(1) | ||
Smart App Compatibility | None | Master Lock Vault Home and Enterprise Apps |
Security & Access(1) | ||
Lock Type | Push Button | 4-digit combination |


Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the Kidde AccessPoint 001166 for its ease of use, durable zinc alloy build, and practical push-button combination changes, positioning it as a reliable and affordable key control solution for service access. However, they note that it lacks smart features like app access and is fundamentally a convenience product rather than a high-security device, as it remains vulnerable to physical manipulation.
Everyday consumers commonly praise the product for its simple setup, sturdy feel, and reliability in providing access for family and services without rusting outdoors. Recurring complaints include the vulnerability of the default combination if not changed, the shackle being too small for thick railings, the limitation of holding only three keys, and occasional mechanical issues with the CLEAR button.

Master Lock's official descriptions characterize the 5400D as a reliable key safe for home or rental use, emphasizing its secure, keyless access and anti-jamming design.
Official notes imply user-friendly operation and convenience for rentals and real estate, suggesting positive reception for its intended temporary access use cases.

