Wynd Sentry gives you the device for free. It sounds generous until you read the next line. The sensor is bundled because you're signing up for the subscription that keeps it alive: $180 a year, with a one-year minimum once the trial ends. Layla is $189 once. No monthly fee, smoke detection built in, and it stays yours whether you keep paying anyone or not.

So a Layla vs Wynd Sentry decision starts with how you'd rather pay. That's the obvious gap. The more useful one is what happens after the sensor smells smoke, because the two devices handle that moment very differently, and it changes what you can actually do about a guest who lit up. Here's the straight comparison.

Layla vs Wynd Sentry at a glance

What Wynd Sentry does

Sentry is one of the few devices in this space that led with smoke instead of noise, and the focus shows. Wynd built it to catch recreational smoking, and it catches it fast. The sensor picks up cigarette, cigar, marijuana, and vape from about twenty feet away, usually within a minute, across a room of up to 400 square feet as long as no walls break it up. It's tuned to ignore a guest cooking dinner, so you're not chasing every plume of steam off the stove. Noise rides along on the same unit, giving you decibel alerts for parties without a second device on the wall.

The part Wynd does better than most is the paper trail. Its SmokeSignal reports are timestamped and location-tagged, built to hold up when a guest swears they never smoked. Hosts lean on them to back a cleaning fee or, in longer tenancies, an eviction. Anyone who has watched someone deny smoking with a straight face knows a clean, exportable record is worth more than a reading you can't produce later. Wynd clearly gets that the value isn't in smelling the smoke, it's in proving it, and that focus has won the company real hospitality accounts.

Maintenance is a non-issue too. No filters, no upkeep. Mount it and it looks after itself.

Two things are worth knowing before you commit. The first is what the alert actually tells you, which is less than you'd think. Wynd's own FAQ is blunt about it: a Sentry alert flags that recreational smoke is present but does not say whether it was a cigarette, a joint, or a vape. For a lot of disputes that distinction is the whole argument. Cannabis in a strict no-smoking unit is a different breach, and in some places a different legal matter, than a guest sneaking a vape by the window. Sentry tells you something happened; it leaves you to guess what.

The second is the model. The hardware being free is a framing choice, because the sensor only works while the subscription is live, and that subscription doesn't end. Stop paying and it stops monitoring. There's a one-year minimum after the 30-day trial, so once that window closes you're in for the year whether the property sells or sits empty. And for all it does well, Sentry watches smoke and noise, and nothing past that. The stuffy room, the air a guest leaves behind, the AC running flat-out in an empty unit, none of it registers, because none of it was ever the job.

What Layla does

Layla comes at the same rental from a wider angle. Smoke is one of several things it watches, and the detection itself is built to answer the questions Sentry leaves open.

It tells you what, and how much

Start with the thing Sentry can't do. Layla reads cigarette, vape, and cannabis and names which one, so the alert that reaches your phone already says what rule was broken. You walk into that guest conversation knowing whether you're dealing with a vape or a room run as a lounge, and that changes how you handle it and how defensible any charge is.

Then there's strength. Layla grades each event low, medium, or high and keeps updating as the smoke builds or clears. A single nervous pull by the balcony door reads low and fades. A session that fills the room climbs and holds. You watch the real shape of what happened instead of getting one flag and nothing after it. You also set the threshold yourself: low enough to hear about a faint trace, high enough that only a sustained session pulls you in. Every alert lands live, tagged by type and graded by strength, so the record you keep says "cannabis, high, 11:40pm" rather than "smoke, sometime." That's a harder thing for a guest to wave off.

The rest of the room a smoke sensor never sees

Here the two products stop overlapping. Layla runs air quality as a core job, not a bonus line, tracking CO₂, VOCs, particulates, temperature, humidity, and mould risk in one indoor reading. It's the gap between a spotless unit that still feels stale on arrival and one you know is fresh. There's more on the air-quality monitoring page than fits here, so treat this as the headline.

Layla also reads occupancy with AI radar. No cameras, no phone pings, just whether the room is genuinely occupied. That feeds the feature Sentry has no answer for: native AC and appliance automation. When the unit reads empty, the AC eases off on its own, so the guest who checks out and leaves it blasting through the dead hours before the next arrival stops showing up on your power bill. In a hot market that saving can cover the device inside a year.

Matias Maradei, Director at Charco Inmobiliaria:

"With Layla, we can monitor air quality, detect smoking events, mold, and ensure Airbnb guests are safe and comfortable."

The fair limits: Layla has no outdoor unit, so noise off a pool deck or a big garden sits outside its reach. And like Sentry, it's a monitoring sensor, not a certified fire or smoke alarm. Keep your required safety devices where they are. Layla handles the policy side a fire alarm was never built for.

Pricing: one payment of $189, nothing recurring.

What it costs over three years

At a single property, a monthly fee barely registers. Give it a few years and a few doors and the picture shifts.

Single property, 3-year total:

Five properties, 3-year total:

Three years in at one property, Sentry runs about three times what Layla does, and that's before the electricity Layla trims by cooling around an empty room. Across five properties the subscription turns unforgiving: $2,700 in fees against $945 all-in. If you like having no upfront cost and you're fine renting the sensor forever, Wynd's model fits. If you'd rather own it, Layla's does.

So which one is worth it?

Pick Wynd Sentry if smoke enforcement is the whole job and you want a specialist that has clearly obsessed over it. The SmokeSignal reporting is strong, detection is quick, the hospitality track record is real, and treating monitoring as a monthly line item may suit how you keep your books. Go in knowing the alert won't tell you which type of smoke it caught, and the sensor stops the day the payments do.

Pick Layla if you want the same coverage without renting it, and you want the alert to actually name what happened. One payment, no lock-in, and smoke sits next to air quality, noise, occupancy, and AC automation on a single sensor. For a host running indoor units who'd rather own the hardware and get more than one job out of it, Layla keeps making more sense the longer it's on the ceiling.

Frequently asked questions

Is Layla cheaper than Wynd Sentry?

Over three years at one property, yes, by a wide margin. Sentry has no upfront hardware cost but bills $180 a year, which is $540 across three years. Layla is a one-time $189 with no ongoing fee. Across five properties the gap widens to roughly $2,700 versus $945.

Does Wynd Sentry require a subscription?

Yes. The device is included, but it only works with an active plan, and there's a one-year minimum after the 30-day trial. Stop paying and the sensor stops monitoring. Layla is a one-time purchase with no subscription.

Does Wynd Sentry tell you if it was a cigarette, vape, or cannabis?

No. Per Wynd's FAQ, a Sentry alert flags that recreational smoke is present but doesn't specify the type. Layla names the smoke as cigarette, vape, or cannabis and grades how strong it is, which matters when a violation turns into a dispute.

Do both detect vaping?

Yes. Both read vape alongside cigarette and cannabis smoke. The difference is in the alert: Layla identifies the type and grades intensity, while Sentry reports "recreational smoke" without breaking it down.

Can I use Sentry's reports as eviction evidence?

Wynd's SmokeSignal reports are timestamped and location-tagged for exactly that, and it's one of the product's real strengths. Layla produces a comparable record and adds the smoke type and intensity to each entry, so the log is more specific about what happened.

What does Layla do that Wynd Sentry doesn't?

Air quality monitoring (CO₂, VOCs, particulates, humidity, mould risk), AI-radar occupancy, and native AC and appliance automation that eases energy use in an empty unit. It also names the smoke type. Sentry stays focused on smoke and noise.

Related reading

• Cigarette, Vape, and Cannabis: How Layla's Smoke Detection Actually Works
• Best Cigarette, Vape & Cannabis Smoke Detectors for Rentals in 2026
• Layla vs Minut: Which Noise Monitor Wins for Airbnb Hosts?

Tired of renting your smoke sensor forever? See how Layla covers your rental: smoke, air quality, noise, and occupancy from one sensor, bought once, with no camera and no audio.