Worth Buying: Master Lock 5441D Bluetooth Wall-Mount Key Box — No More Copying Keys for Rentals and Crews

Amazon.ca has the Master Lock 5441D Bluetooth wall-mount key lock box for $305.78 (list $335.44, 9% off). The discount isn't dramatic — the case for it is what the box does.

Spare keys or access cards live inside, and guests open it with a code or their phone. Inside is 3-39/64 × 2-1/2 × 1-7/64 in, enough for several keys and cards; the zinc body is rated to -40°C, so an exterior wall is fine. CR123A battery included, and the Master Lock Vault Home app handles up to 10 locks with access history, low-battery and tamper alerts.

The real value is rentals and trades. Tenants turn over, cleaners show up, a crew needs in — you change a code instead of rekeying a lock or handing over keys in person. Several of the 4–5 star reviews are from cottage and short-term rental hosts who aren't on site.

There's one hard limitation to know before buying: changing a code requires you to be within Bluetooth range of the box for it to take effect. You can't change codes remotely. If your scenario is "I'm in another city and need to give a guest a fresh code," that workflow stalls — and it shows up in the reviews, so it isn't a one-off.

So: good for landlords who are on site regularly but don't want to open the door every time, for renovation management, or a home with a caregiver coming and going. For pure remote management, look at the Wi-Fi models instead. At 9% off there's no rush — but if you need it working this week, the box itself does the job.

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⚠️ Ships from an overseas seller; the price includes an Estimated Import Fees Deposit, so the final price may vary slightly by province/address.