The boxes that make it work

Four devices: a beacon that listens, a card the worker carries, a node on the door frame, and a camera. Dimensions, mounting, power and radio for each.

What these devices are used to build

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The numbers show where each device goes. The cards explain what each one does.

How the system fits together

Tags and fixed sensors read each other over Bluetooth, a site gateway carries that traffic to the cloud, and the platform turns it into positions, alerts, and reports.

The lineup

Four devices covering people, rooms, entrances, and the view of the site itself.

Beacon

Fixed Bluetooth beacon

A fixed beacon for the wall or ceiling. Three or four per room listen for worker cards and report how close each one is, which the platform turns into a position accurate to within 2 to 5 metres, or with fewer units into a room name.

Best for: Locating workers indoors
Where it goes: Wall or ceiling bracket
How many: 3 to 4 per room

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Worker Tag

The card each worker carries

A card with a printed number, clipped to the worker's belt. It broadcasts an anonymous ID over Bluetooth; binding it to a person is what turns those broadcasts into attendance, time per room and zone alerts. Wearing the card is the clock-in.

Best for: Every worker on site
Where it goes: Clipped to the belt or waistband
How many: One per worker

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Door Node

Doorway crossing sensor

A unit on the side of the door frame that reports each crossing. A sensor sees who enters and Bluetooth reads the cards nearby, so a door is a boundary rather than a guess: an entry puts the worker inside the room and only a matching exit takes them out.

Best for: Doors, rooms, and restricted areas
Where it goes: On the door frame, at the side
How many: One per tracked door

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Site Camera

AI vision camera

An AI camera system. Computer vision reads the same footage three ways: whether crews are wearing the required gear, how much of the observed time is active work, and how much material is left in a stockpile.

Best for: Seeing and understanding the site without driving to it
Where it goes: Pole, mast, or wall arm
How many: One per work area

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Side by side

The rows a survey asks about first. Full sheets, including electrical and environmental, are on each device page.

Spec	01Beacon	02Worker Tag	03Door Node	04Site Camera
Mounting	Wall or ceiling bracket	Clipped to the belt or waistband	On the door frame, at the side	Pole, mast, or wall arm
Units needed	3 to 4 per room	One per worker	One per tracked door	One per work area
Dimensions	43 × 63 × 14.5 mm	114.3 × 54.5 × 41 mm	58 × 72.5 × 24.5 mm	59.5 × 93 × 25 mm
Power	USB-C 5 V or PoE adapter	Rechargeable, USB-C	12 V DC or PoE	PoE 802.3af or 12 V DC
Radio	BLE scanning + Wi-Fi	BLE broadcast	BLE crossing detection, LoRa uplink to a gateway	Wi-Fi 5, optional 4G LTE
Ingress rating	IP54	IP65	IP54	IP66
Operating temperature	-10 °C to 55 °C	-20 °C to 60 °C	-10 °C to 55 °C	-25 °C to 60 °C

Dimensions come from the production enclosures. Ask us for the full datasheet before you specify anything.

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