People counting at entrances

Quantity rule: 1 sensor per door, unless a door is wider than 4 m — then use 1 sensor per 4 m of width (round up). A single overhead counter reliably spans about 4 m at typical entrance heights.

Model by ceiling height (door counters are entrance-mounted, picked by height, not by floor area):

Re-ID (unique visitors / journeys)

Same per-door quantity rule. Re-ID runs on the Vemtrack platform and needs a TDI edge AI unit.

• Door sensor: TD2000 G3 if ceiling ≤ 4 m, otherwise TD1501 G2.

• Edge AI unit (one per site), sized by sensor count: TD4001 T2 for ≤ 4 sensors, T6 for ≤ 8, T21 above that.

Full-area tracking (space stitching)

Multiple sensors stitched into one continuous tracking area. The key decision is AI mode vs No-AI mode, because Xovis AI extensions (demographics, age/gender, view direction) only validate up to about 4.0 m.

• Overlap: stitched sensors must overlap, so reduce each sensor's coverage dimension by ~0.5 m for the hand-off. Effective covered area per sensor is therefore smaller than its raw footprint.

• PF-L is chosen for open-area tracking when the zone is larger than ~150 m². In AI mode above 4 m the advisor warns and adds 1 AI-extension licence per sensor.

• Multisensor group limits: PC parent max 9 sensors; PF group max 15; above ~350 sensors use the Xovis SPIDER processor.

Zone & desk occupancy

Air quality / IAQ

Quantity: ceil(area / 120) — roughly 1 sensor per 100–150 m².

• AM319 (9-in-1: CO₂, PM2.5, PM10, TVOC, HCHO/O₃) for office, hotel, airport.

• AM103 (CO₂/temp/RH) for simpler demand-controlled ventilation.

Energy & ESG (CSRD / ESRS E1)

Smart restroom

Requires a cubicle count — the advisor asks for it rather than guessing. Per cubicle count c:

• VS330 occupancy and WS201 paper monitor: 1 per cubicle

• Soap level: ceil(c / 3); GS301 gas/odour: ceil(c / 8); WS303 (people/feedback): max(2, ceil(c / 4))

Waste, leak, temperature, HVAC, access

LoRaWAN gateway

Whenever any LoRaWAN sensor is in the solution, add a Milesight UG65 gateway: ceil(area / 2000), i.e. roughly 1 per floor/zone. Gateways are infrastructure, not licensed sensors. LoRaWAN sensors connect to ttn.vemcount.app over UDP 1700.

Platform & licensing

• Vemcount: people counting, occupancy, IoT/environment, energy.

• Vemtrack: Re-ID / unique-visitor analytics (TDI).

• Each sensor is one annual licence (ARR). Sensors are source-agnostic — hardware can be bought anywhere; Vemco licenses the software. Gateways and edge processors are not licensed sensors.