Desk Occupancy Sensors for Smart Offices

The desk occupancy sensors that fit each space

Under-desk PIR for individual desks, ceiling AI units that map whole zones, and anonymous room sensors for the spaces in between. All battery or low-voltage, all one dashboard.

Individual desksMilesight VS340 Desk & Seat Occupancy Sensor

Screws or sticks under the desk; detects genuine presence, not a jacket on a chair. The per-desk workhorse.

From £43.39 ex VATView →Zones from the ceilingMilesight VS321 AI Workplace Occupancy Sensor

PIR plus AI camera reads up to a whole neighbourhood of desks at 95 % accuracy — fewer devices, wider net.

£124.20 ex VATView →Open-plan mappingMilesight VS121 AI Workplace Occupancy Sensor

The higher-density AI occupancy unit for larger zones and busy floors.

From £276.82 ex VATView →Meeting rooms & phone boothsMilesight VS370 Radar Human Presence Sensor

Radar presence sensing — detects a still person on a call, which PIR famously misses.

£74.82 ex VATView →Toilets & utility roomsMilesight VS330 Bathroom Occupancy Sensor

Anonymous occupancy for the spaces cleaning schedules should follow, not the clock.

£67.34 ex VATView →Pilot bundleMilesight Smart Building Occupancy Kit — Occupancy + Air Quality + Gateway

Occupancy, air quality and gateway in one box — instrument a pilot floor immediately.

£531.21 ex VATView →

What the rest of the UK market charges — and who won't say

Desk occupancy sensors are unusually hard to price-check: most UK suppliers will not publish a figure at all. We checked every UK supplier we could find on 30 July 2026. Five of the eight below make you book a demo or fill in a form before they will name a number.

UKIoT’s £75.60 is the VS340-868M variant; their combined VS340/VS341 listing runs from £75.60 to £106.20, so compare variant to variant. Concept13 publishes openly but does not carry Milesight at all — their Elsys EMS2DESK is shown for market context, not as a like-for-like, and drops to £52 at 100+ units.

We are not claiming to be the cheapest in the UK; distributors with trade accounts can and do go lower, and any of these figures can change the day after we checked them. The point of this table is narrower and more useful: you can see our number without talking to anyone, and on the identical Milesight part we are well under the only other supplier who also publishes one.

Per-desk or per-zone — how to decide

Per-desk sensors give unarguable numbers — desk 4.12 was used 11 % of October — and validate desk-booking systems by catching book-and-no-show. Ceiling AI units cost more per device but cover ten-plus desks each, so above roughly eight desks per zone they win on cost and install effort. Most projects mix them: per-desk in contested neighbourhoods, zone units across the rest.

Buy the radar unit for meeting rooms rather than repurposing PIR: a motionless person on a video call defeats PIR within minutes, and phantom ‘free’ rooms destroy trust in the whole system. Whatever the mix, run desk occupancy sensors for at least one full quarter before acting on the data — utilisation has monthly rhythms that a two-week snapshot misses.

• Per-desk PIR: unarguable per-position data, ideal for booking validation
• Ceiling AI: one device per zone, ~95 % accuracy, faster rollout
• Radar presence: the only reliable answer for still people in meeting rooms
• All tiers are anonymous — presence and counts, never identity
• Battery devices move with every floor re-plan, no re-cabling
• Quarterly data beats snapshot surveys for lease decisions

Frequently asked questions