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Placing sensors

Where you place a sensor has a big effect on how reliable your readings and alerts are. Good placement gives you confident, actionable data — poor placement creates noise.

General principles

Four habits that hold true for almost any asset.

Measure where it matters

Place the sensor where you want to know the actual temperature, not where it is most convenient.

Avoid walls and metal

Sensors pressed against walls or metal surfaces can read warmer or colder than the surrounding air.

Stay clear of fans and vents

Direct airflow from evaporator fans, vents, or door seals creates short, spiky readings that look like incidents.

Keep it visible

Make sure the sensor cannot be knocked behind stock or trapped under product as the asset is filled.

Fridges and display cabinets

  • Place the sensor in the middle of the cabinet where stock typically sits.
  • Avoid the top shelf in upright fridges — it tends to be the warmest spot.
  • For cabinets with a lot of door opening, consider one sensor near the front and one near the back.
Sensor mounted on a centre shelf of a commercial upright fridge — replace via Odoo editor
Sensor secured near the top of a chest freezer — replace via Odoo editor

Freezers

  • Place the sensor in the warmest expected zone (often near the door or top).
  • Avoid burying the sensor in product so the battery and signal stay healthy.
  • For chest freezers, secure the sensor near the top so it is not lost under stock.

Cool rooms and walk-ins

  • For small cool rooms, one sensor in the centre is usually fine.
  • For larger rooms, place sensors at typical product height in different zones.
  • Avoid placing the sensor directly under the evaporator fan.
Sensor at product height inside a commercial walk-in cool room — replace via Odoo editor
Hub placement with a coverage range overlay — replace via Odoo editor

Hubs and signal range

  • Keep a hub within line of sight of as many sensors as possible.
  • Thick walls, metal panels, and large appliances can reduce range.
  • If a sensor keeps dropping out, move it closer to the hub or add another hub.

Labelling

Once a sensor is in position, label the asset (for example with a sticker or printed tag) so staff know which sensor relates to which fridge, freezer, or cool room. This is also useful when an alert fires and somebody needs to act quickly.

Printed asset label on the door frame of a commercial fridge — replace via Odoo editor

Sensors in place? Time to read the dashboard.

Once readings start flowing, the dashboard is where you tell at-a-glance what is in range and what needs attention.

Open the dashboard guide Set up alerts