Not every apartment unit sits behind a climate-controlled corridor; plenty of rental portfolios include buildings where every unit door opens directly to the outside, and every lock on those doors is exposed to the harsh Canadian weather year-round. Think garden-style complexes. walk-ups with open breezeways, ground-floor patio units, townhome-style stacked rentals, bungalow clusters, casita communities, and cabin-style resort properties. At turnover, someone is out there with a rekeying kit, standing in the rain or the cold, swapping pins on a mechanical deadbolt that could have been replaced years ago if only there had been a better option that could survive everything Mother Nature could throw at it.
Inside those same buildings, the access control story is different. Lobbies, amenity rooms, mail centres, fitness areas, and parking garages run on cloud-managed platforms that issue and revoke credentials remotely, log every access event, and eliminate rekeying entirely. Residents expect it: NMHC reports that 67 per cent of renters now want keyless entry. The gap is not inside the building; the gap is at the building envelope.
Where the workarounds break down
Property managers have tried to close that gap: some installed consumer-grade smart locks on exterior doors, but the electronics corroded and keypads froze. Warranty claims went nowhere because the locks were never rated for outdoor use. Others stuck with mechanical deadbolts and absorbed the costs: rekeying at every turnover, managing duplicate key inventories, and accepting the security liability of credentials that can be copied at any hardware store for a few dollars.
Neither approach is scalable. A 150-unit garden-style community with two turnovers per unit per year is rekeying 300 locks annually. That involves labour, parts, coordination, and time a maintenance team could spend on work that actually improves the property. Meanwhile, the exterior doors remain the only access points on the property without audit trails, remote credential management, or the ability to reissue a lost key instantly.
Why did the hardware not exist until now?
Building a smart lock that survives outdoors is not a matter of simply adding a rubber gasket; the electronics have to function reliably in temperatures from -35º to over 60º. Those temperature extremes stress batteries, digital displays, and the delicate interior electronics like wireless antennas at each extreme. The housing needs an IP55 rating to resist dust and water from any angle. The lock still has to meet fire door assembly standards, because many exterior-facing unit doors sit on rated openings. ANSI/BHMA Grade AAA certification and a UL 10C fire rating of 180 minutes on metal doors are code requirements in multifamily, not optional upgrades.
It also must fit existing holes. Retrofitting a rental property does not come with the luxury of reframing doors. Whatever goes on needs to drop into the existing deadbolt door prep, the standard round bore hole that mechanical deadbolts have used for decades. A product that requires new holes or hardwired power is a non-starter when people are living behind those doors, and the budget has to work across the portfolio.
A deadbolt that checks every box
Salto has addressed this challenge with the new DBolt Touch Outdoor, a smart deadbolt built for exterior residential doors that meets the benchmarks and code requirements above. It runs on three AA batteries rated for up to 85,000 cycles, fits into a standard deadbolt hole with no additional drilling or door modification, and a maintenance tech can swap out a mechanical deadbolt with a screwdriver.
The touchpad accepts RFID cards and fobs, NFC credentials, Bluetooth digital keys, and PIN codes. That credential range ties outdoor doors back into the rest of the building, so a resident with a single card or phone can now move from parking garage to lobby to elevator to fitness room to their exterior-facing front door – with one key.
What changes on the operating side?
The exterior door joins the same managed smart access ecosystem as every other door and access point. Credential issuance, revocation, and audit logging happen in one platform, so rekeying disappears and the security gap at the building envelope closes.
The resident experience is upgraded: a renter in a garden walk-up or a ground-floor patio unit gets the same modern keyless convenience that luxury high-rise residents have had for years. Their front door works the same as the pool gate, workout room door, and main entrance. For multifamily owners competing for tenants in a tightening rental market, that parity matters. The fact that the unit door faces a snowstorm instead of a hallway no longer means it gets left behind.
For more information: saltosystems.ca
