What Sensors Are Allowed in Airbnb

You’re standing in the hardware aisle holding a four-pack of motion sensors and a leak detector, and you suddenly aren’t sure which of these are going to get you delisted. Airbnb tightened the screws on indoor monitoring in 2024, and even experienced hosts get confused about where the lines are. A motion sensor that turns on a hallway light? Probably fine. A motion sensor that pings your phone every time someone walks past it? Probably not. A leak sensor under the sink? Always fine. A noise sensor in the living room? Fine if it’s the right kind and you disclose it.

The question of what sensors are allowed in Airbnb properties has a real answer — this guide gives you the clear list, the reasoning, and the disclosure language so you can buy with confidence. For the parent overview, see monitor Airbnb without spying: the host’s playbook.

Who this is for

If you host on Airbnb (or Vrbo, which has similar rules) and want to add or audit sensors in your property, this is for you. You’re trying to do the right thing — you want operational visibility without crossing into surveillance — and you want a clear, plain answer instead of legalese. New hosts setting up from scratch and experienced hosts double-checking what they already installed will both find what they need.

The single rule that decides everything

Sensors that report on the property are allowed. Sensors that report on the people inside the property are not. That’s the lens to apply to anything you’re considering. The principles behind this rule live in our guide to ethical Airbnb monitoring.

A leak sensor reports on the property (water on the floor). A door contact sensor reports on the property (door open or closed). A thermostat reports on the property (temperature). A motion sensor that triggers a hallway light when someone walks past reports on the property’s lighting needs. A motion sensor that builds a host dashboard showing “guest in bedroom 2 minutes ago” reports on the people. A camera or microphone inside the home, almost by definition, reports on the people.

Apply that lens consistently and most decisions get easy.

Sensors that are clearly allowed

Leak sensors

Place under every sink, behind every toilet, near the water heater, near washer hookups, and near any indoor HVAC unit. Aqara Water Leak Sensor T1, Govee Wi-Fi Water Sensor, and YoLink Leak Sensor 4 all sell good ones for $10-25 each. They report “water detected” and that’s it. Always allowed, no disclosure required, and they’ll pay for themselves the first time they catch a slow leak before it ruins a floor.

Smoke and CO detectors

Required by Airbnb policy, in fact. A smart version (Nest Protect, First Alert Onelink, or smart batteries like Roost in your existing detectors) sends alerts to your phone. Always allowed. The only watch-out: some smart smoke detectors have built-in microphones for voice features — pick a model without one to keep things clean.

Door and window contact sensors

Magnetic two-piece sensors (Aqara, SimpliSafe Entry, Eve Door & Window) that report “open” or “closed.” Allowed on exterior doors and windows. Use them to confirm the front door locked, to pause HVAC if a window opens, or to alert you if a back door is left open at checkout. Stay off interior doors (bedroom, bathroom) — that’s tracking guest movement, which crosses the line.

Temperature and humidity sensors

Allowed everywhere. They read environmental conditions only. Useful for verifying HVAC is reaching distant rooms, catching humidity issues that lead to mold, or monitoring vacant-mode setpoints between bookings. Ecobee Smart Sensors, Govee thermometers, and Aqara TH sensors all work.

Smart thermostats

Ecobee Premium, Nest Learning Thermostat (4th gen), Honeywell T9. Allowed everywhere. The thermostat itself is a giant sensor, plus a controller. Set guardrails for guest adjustments and reset to vacant mode at checkout.

Smart locks

Schlage Encode Plus, Yale Assure 2, August Wi-Fi Smart Lock. Allowed everywhere. They report lock and unlock events with timestamps. Disclose them in the listing as a courtesy — guests want to know how entry works.

Decibel-only noise sensors

Minut Point and NoiseAware. They measure loudness without recording audio. Allowed indoors and outdoors with disclosure. They alert you if a party crosses a threshold without giving you any insight into conversations. This is the right alternative to indoor microphones.

Sensors that are allowed but require disclosure

Outdoor cameras and doorbell cameras

The Ring Battery Doorbell Plus, Google Nest Doorbell, and Eufy E340 are allowed when pointed at exterior areas (entries, driveways) and disclosed in the listing. They cannot capture indoor spaces or private outdoor areas like hot tubs. Audio recording in particular needs explicit disclosure given state-level recording-consent laws. Use the wording in our Airbnb smart device disclosure templates.

Indoor smart speakers

Echo Dot 5, Google Nest Mini, Apple HomePod mini. Allowed in common areas as guest amenities, must be disclosed because they contain always-on microphones. Many privacy-conscious hosts skip them entirely — the upside (guest convenience) doesn’t outweigh the trust hit for some travelers.

Motion sensors used for automation

An Aqara or Philips Hue motion sensor that turns on a closet light or hallway nightlight is fine. The line gets crossed when motion data flows to a host dashboard or alerting system. If you use motion sensors, keep them local to the automation (motion triggers light, no notification) and disclose them in the listing as part of “smart lighting in the hallway turns on automatically at night.”

Sensors that are NOT allowed

Indoor cameras of any kind. Wyze Cam, Ring Indoor, Nest Cam, Eufy SoloCam — doesn’t matter. Indoor cameras have been banned since April 2024 regardless of disclosure.
Indoor microphones standalone. An audio-recording sensor inside the home is banned even if disclosed.
Hidden devices of any kind. Concealed cameras, sensors built into clocks or USB chargers — instant delisting and likely legal issues.
Cameras pointing into private spaces. An outdoor camera that captures the hot tub, an indoor window, or a neighbor’s yard is a problem.
Person-detection or facial-recognition systems. Off-limits for short-term rental use, full stop.

A privacy-safe sensor stack to install this weekend

Smart smoke and CO detector (Nest Protect, First Alert Onelink, or Roost smart battery in existing detectors).
Four to six leak sensors (under sinks, behind toilets, near water heater, near washer).
Door contact sensors on every exterior door.
Window contact sensors on any windows that affect HVAC.
Ecobee Smart Sensor in the room farthest from the thermostat.
Decibel-only noise sensor (Minut Point) in the main living area.
Doorbell camera (Ring or Nest) at the front entrance.

That’s the full kit. Total cost around $250-400 depending on which platform you pick. Operationally complete, ethically clean, and disclosable in three sentences. Our privacy-safe smart home for rentals shopping guide has the longer cross-shop with current model recommendations.

Disclosure language to copy

Add this paragraph to your listing description and welcome book:

“Connected devices in this home: smart smoke and CO detectors, leak sensors under sinks, door and window sensors on exterior openings, an Ecobee thermostat, a Schlage Encode smart lock with a personalized code, a Ring doorbell camera at the front entrance (video and audio), and a Minut decibel-only noise sensor in the living area that measures sound levels but does not record audio. There are no cameras or microphones inside the home.”

For shorter and longer variants of this paragraph, see smart home disclosure for guests.

Common mistakes

Treating motion sensors as harmless. They’re fine for triggering automations but become surveillance the moment they feed a host dashboard.
Skipping required smoke and CO detectors. These are the only sensors Airbnb actually requires. Don’t skip them.
Buying a noise sensor that records audio. Some early-generation devices recorded actual audio for analysis. Buy decibel-only models like current Minut and NoiseAware units.
Forgetting outdoor sensors. Outdoor temperature sensors, hot tub temperature sensors, and pool sensors are all fine and useful, but make sure your camera positioning doesn’t capture areas guests use for privacy.
Vague disclosures. “Smart home devices in use” doesn’t satisfy disclosure rules. List each category specifically.

Host checklist

Smart smoke and CO detectors installed.
Leak sensors at every water source.
Door/window contact sensors on exterior only.
Smart thermostat with vacant-mode reset.
Smart lock with rotating codes.
Decibel-only noise sensor in main room.
Doorbell camera at front entry.
Zero indoor cameras or audio-recording devices.
Disclosure paragraph in listing, house rules, and welcome book.

Run that list every quarter using our Airbnb host privacy checklist for the room-by-room walkthrough.

FAQ

Are guest privacy smart home devices considered “sensors” by Airbnb?

Airbnb’s policy language uses “recording devices” rather than “sensors,” but the same logic applies. Anything that captures images, audio, or movement of people falls under the recording device rules. Anything that captures property data — temperature, humidity, water, door state — is considered a normal home automation device. Disclose anything that could conceivably record people; you don’t have to disclose every leak sensor.

Are motion sensors allowed in Airbnb bedrooms?

A motion sensor used purely to control a bedside lamp or closet light, with no host-side notification or logging, is acceptable but should be disclosed. A motion sensor that pings the host’s phone every time motion is detected, or builds a log of when the room was occupied, crosses into surveillance territory and should not be installed in a bedroom. When in doubt, leave bedrooms sensor-free except for temperature.

Is a Minut noise sensor considered a microphone?

Modern Minut Point devices process sound levels locally and do not transmit or store audio. Airbnb has explicitly carved out decibel-only sensors as allowed when disclosed. Older noise monitoring products that did record audio for cloud analysis are not allowed under current rules. Verify the spec sheet of any noise device you buy — if it records audio in any form, skip it.

Do I need to disclose leak and smoke sensors?

Disclosure isn’t strictly required for property-protection sensors that don’t capture people, but mentioning them in your welcome book is good practice. “This home has Aqara leak detectors under all sinks and Nest Protect smart smoke and CO alarms throughout” is reassuring rather than alarming — it positions you as a careful host. Required disclosure applies to any device that records people or audio.

What about smart locks — are those considered sensors?

Smart locks log entry events, which is a form of monitoring, but Airbnb explicitly allows them and they’re standard equipment for short-term rentals at this point. Disclose them as a convenience (“Schlage Encode smart lock with a unique code for your stay”). Don’t share guest entry timestamps with anyone, retain logs only as long as needed for security purposes, and rotate codes between bookings.

Next steps

Buy the privacy-safe stack listed above. Install it this weekend. Update your listing with the disclosure paragraph. You’ll have property-level visibility without crossing any of the lines that get hosts in trouble. The hosts who clear Airbnb’s bar consistently aren’t the ones who avoid technology — they’re the ones who buy the right hardware and tell their guests about it up front.