The occupancy sensor that reveals the real use of your offices.
Installed in two minutes, on the wall or simply set down, K Sense continuously measures the air, comfort and occupancy of every space. No camera, no microphone, 100% anonymous. The data flows into K-work so you can manage your m² on facts, not hunches.
One device, five measurements.
Every K Sense continuously tracks five indicators of a space's health and use, then brings them together into a comfort index you can read at a glance.
CO₂ & air quality
The CO₂ level gives away stale air and a room that is poorly ventilated.
Temperature
The real thermal comfort of the space, measured continuously.
Humidity
The relative humidity level, to spot air that is too dry or too damp.
Light level
The ambient light in the space, measured continuously.
Presence & occupancy
The real occupancy of the space, entirely anonymously.
Comfort index
A live summary score that brings every measurement together.
From measurement to decision.
Every measurement turns into a concrete lever for managing your floor space and your teams' comfort.
Measure real use
Capture occupancy and comfort in every space, continuously and without bias.
Spot the wasted m²
Identify the empty or overcrowded spaces that nobody sees today.
Optimise your floor space
Match the m² you lease, and the way you fit them out, to observed use rather than assumptions.
Run on facts
Settle budgets and organisation on reliable data, updated live.
Designed to disappear into the background.
A clean housing with no screen: a discreet indicator turns from green to red with the CO2 level, so you can see at a glance when to air the room. On the wall or simply set on a shelf, K Sense blends into the space: you install it, then forget it. Wireless and battery-powered (up to 20 years' battery life), it moves from room to room whenever you want, with no maintenance at all. It keeps watch quietly while your teams work.
Up and running in two minutes.
No wiring, no integrator, no building work. You unbox it, you put it up, it is online.
You unbox it
K Sense arrives ready to use. Nothing to assemble, nothing to set up.
You put it wherever you want
On the wall or on a shelf, in 2 minutes, with no tools and no building work. Reposition it whenever you want.
It syncs
Measurements are sent automatically, in real time, wirelessly.
You take control
Everything appears in the K-work dashboard. You decide on facts.
Your spaces, set out in black and white.
The measurements from every K Sense flow live into the K-work dashboard. Occupancy rates, air quality and comfort can be read there by space, by floor and by time slot.
- See occupancy space by space, in real time and across history.
- Spot under-used m² at a glance, with no spreadsheet and no manual survey.
- Track air and comfort so you can act before your teams complain.
- Decide on facts your floor space, your opening hours and your layouts.
- Free up ghost rooms : K Sense spots no-shows and K-work reopens the slot automatically.
How many people, really ?
The sensor tells you whether a space is occupied. Our software goes further: its algorithm combines presence with CO₂ dynamics to estimate how busy a space is, session after session.
Spaces sized on real use.
A space always used by one person does not need to be a large room. Conversely, a room that is always full is undersized. Estimated headcount tells you which is which, space by space.
- Over- or under-occupancy : spot the rooms that are too big (or too small) for the way they are really used.
- Fit out precisely : size your spaces on observed headcount, not assumed.
- Trends over time : track how use evolves, space by space.
Estimated by sensor fusion (presence + CO₂) using the K-work algorithm, 100% anonymous: no individual counting, no camera.
Useful data, never intrusive.
K Sense measures the environment and occupancy without ever identifying anyone.
Complete anonymity
No camera, no microphone. No image and no sound is ever captured.
No identification
Nobody is recognised or tracked. Environmental and occupancy measurements are aggregated.
Hosted in the EU, GDPR
Your data stays in the EU and complies with the GDPR, end to end.
At a glance.
Measurements
Light level · Temperature · Humidity · CO₂ · Presence (sound level optional)
Power
Wireless, battery-powered: up to 20 years' battery life
Connectivity
LoRaWAN, wireless, real time
Measurement frequency
Continuous readings, real-time reporting
Installation
On the wall or free-standing, no building work or tools, in 2 min · repositionable
Form factor
Compact housing with no screen · CO2 indicator (green/amber/red)
Dimensions
87 × 87 × 23 mm
Weight
150 g (battery included)
Technologies
Infrared presence detection (PIR, 6 m) · LoRaWAN · AES128 encryption · on-board algorithm · COFRAC calibration
Privacy Policy
No camera, no microphone, 100% anonymous measurements
Data
Hosted in the EU, GDPR-compliant
Air quality and CO₂ in the office, explained.
Poorly renewed air tires people out, lowers concentration and erodes comfort, often without anyone noticing. Measuring CO₂ finally makes this invisible phenomenon readable, space by space.
CO₂, the clearest sign of stale air.
In an occupied room, the carbon dioxide (CO₂) we breathe out builds up as soon as the supply of fresh air fails to keep pace. Its concentration is therefore a good indicator of air renewal and of how many people are present: the higher it climbs, the more confined the room. That is the position taken by the INRS, which sees real-time CO₂ detectors as a major asset for prevention at work.
Where to set the bar, in ppm.
CO₂ is read in parts per million (ppm). Outdoors, air sits at around 400 ppm. Indoors, healthy air means staying below about 800 ppm, the sign of satisfactory renewal. Above about 1000 ppm, CO₂ signals insufficient ventilation: this is the long-standing benchmark used to set the fresh-air flow rates in the French Labour Code.
Commonly accepted benchmarks for a workplace. Sources: INRS (indoor air quality) and the French order of 27 December 2022, which treats a concentration below 800 ppm as the sign of well-renewed air. Outdoor air sits at around 400 ppm.
CO₂, and all its context.
CO₂ does not tell the whole story on its own. That is why K Sense records it continuously alongside temperature, humidity, light level and occupancy. Four environmental indicators and one measure of real use, brought together in a single discreet device, to truly understand what each space goes through.
- More comfort and concentration: well-renewed air limits drowsiness and end-of-day headaches.
- A genuine wellbeing approach: air and comfort become tracked indicators, not a vague feeling.
- Acting at the right moment: you air the room or review the ventilation when the measurements justify it, not blindly.
Measuring is already saving.
K Sense makes visible the energy spent on empty or badly set spaces. You, or your BMS, act on facts, and you prove it in your CSR reporting.
Very low-power sensors
Wireless, battery-powered: up to 20 years' battery life. Almost no batteries to replace, little waste, no maintenance call-outs.
No more wasted energy
K Sense measures light level and presence: an alert flags a light left on in an empty space, so it can be switched off at the right moment.
Ventilate just as much as needed
Measuring CO₂ avoids over-ventilating or over-heating empty rooms: you adjust to real occupancy.
Evidence for your CSR reporting
Consolidated occupancy, air and comfort data feeds your CSR and wellbeing reporting: figures, not intentions.
Compatible with your BMS. K Sense runs on low-power LoRaWAN: its measurements can feed your Building Management System through an API, to automate certain actions (lighting, ventilation) according to real use. K Sense measures and alerts; the action stays under the control of your BMS.
0%
of office m² are on average under-used.
Without sensors, you pay every month for empty spaces without knowing it. K Sense makes that use visible, space by space.
KBEEN observation across sites running flex office.
Space Pack: 3 subscription tiers.
For companies equipping their own offices: sensors, booking and dashboard, all as pure OPEX.
Essential
- 5-in-1 K Sense sensor
- Real-time booking
- Google Calendar & Outlook sync
- Microsoft, Google & Apple SSO
- Slack integration
- Dashboard & basic analytics
- Standard support
Comfort
- Everything in Essential
- Advanced analytics (trends, ROI per m²)
- ESG / wellbeing reporting
- Integration API
- Priority support
Premium
- Everything in Comfort
- Multi-site dashboard
- 99.5% SLA
- Dedicated account manager
- On-site training
1 K Sense sensor = 1 connected space
A space means a meeting room, an open space or a zone. Prices shown per month, billed annually: €228 / €324 / €432 per year per connected space. QR or presence-detected check-in. No installation fees. Quote within 24 h.
Frequently asked questions
No. K Sense contains neither a microphone nor a camera. It measures only environmental parameters (light level, CO₂, temperature, humidity) and occupancy, entirely anonymously. Data is hosted in the EU and complies with the GDPR.
When the sound level option is switched on, K Sense records only the ambient sound intensity. No sound is recorded, transmitted or stored: only the ambient value is kept.
Neither. K Sense goes on the wall or on a shelf in a few minutes, with no wiring and no tools. Wireless and battery-powered, it moves freely, with no permanent fixing. Syncing with the K-work app and dashboard is automatic.
Generally one sensor per space you want to track (meeting room, open space, zone). The ideal density depends on the floor area and your objectives: describe your site in the quote form and our team will advise you.
K Sense fits into your existing spaces and sends its data to K-work, included in the all-inclusive Smart Office offer. KBEEN acoustic booths are complementary, not a prerequisite.
Yes. The Comfort and Premium plans include an integration API: the sensors or the BMS you already have can send their data to the K-work dashboard, without replacing your hardware. Contact us to confirm compatibility.
Make the use of your spaces visible.
Get a demo of K Sense and the K-work dashboard, with a tailored quote within 24 h.
Contact our teamK Sense is part of the Smart Office. Discover the Smart Office · See the K-work dashboard
K Sense never works alone.
The sensor is part of a coherent whole: the complete solution, the dashboard and the app for your teams.