Environmental sensing is the least contentious category, among the cheapest, and it affects more than most facilities realise.
What to monitor and why
Temperature, for product integrity in chilled and ambient storage, and for equipment.
Humidity, which affects packaging, labels, corrosion and some products directly.
Air quality, including exhaust from combustion equipment, dust and particulates.
Noise, which is an occupational exposure question with defined limits in most jurisdictions.
Light levels, which affect error rates and safety.
Vibration, on equipment, as a maintenance indicator.
The product case
Chilled and frozen chains require continuous monitoring and records in most regulated sectors.
Excursion detection with alerting matters more than the record, since a recorded excursion nobody acted on is evidence of a failure rather than a control.
Mapping before monitoring. Temperature varies substantially within a single space; sensors placed without a mapping study measure the wrong points.
Door and dock effects dominate in most facilities and are the main source of excursions.
The people case
Heat is an occupational risk in facilities without climate control, and it interacts with workload: the same temperature is more dangerous during heavy manual work.
Cold storage has its own exposure limits and break requirements.
Noise exposure is regulated with defined action levels, and personal dosimetry is the accurate method.
Air quality matters where combustion equipment operates indoors.
These are health and safety obligations rather than optimisation opportunities, and they should be owned by whoever owns safety.
The equipment case
Charging areas generate heat and, in some chemistries, gas requiring ventilation monitoring.
Vibration and temperature on conveyors and motors, which predicts failure.
Compressed air leaks, which are a large and invisible energy cost.
Energy monitoring by circuit, which localises consumption and frequently finds equipment running when it need not.
Practical deployment
Cheap and simple. Battery sensors with a wireless gateway, deployed in an afternoon.
Placement matters more than sensor count. A mapping study first, then permanent sensors at the points that matter.
Calibration on a schedule, which is a compliance requirement for regulated storage.
Alerting thresholds set from the requirement, not from the sensor's default.
Alert to someone who can act, at the hour it matters. An excursion alert arriving in an unmonitored inbox at three in the morning is not a control.
Where it connects to the rest
Correlate environmental data with error and injury rates, which frequently reveals relationships nobody suspected: errors rising with temperature, incidents concentrated in poorly lit zones.
Correlate with equipment failures.
Correlate with absence, in facilities with extreme conditions.
These correlations are among the most useful outputs of a monitoring programme and they cost almost nothing to produce once both data sets exist.
Mapping before placing sensors
Temperature and humidity vary substantially within one space, and sensors placed by convenience measure the wrong points.
Run a temporary survey with many loggers across the space, at several heights, for a full week.
Include the extremes: near doors, near the roof, in corners, at floor level.
Identify the worst points, which is where the permanent sensors go.
Repeat after any change to racking, doors or ventilation.
Regulated storage generally requires this mapping as evidence, and it is the first thing an auditor asks for.
Correlating conditions with outcomes
Among the highest-return analyses available once both data sets exist, and it costs nothing.
Error rate against temperature, by zone and hour.
Injury and near-miss rate against light level.
Absence against extremes of temperature.
Equipment failure against vibration and heat.
Pick rate against temperature, which frequently shows a relationship nobody had quantified.
Where a relationship appears, it converts an environmental improvement from a comfort argument into an operational one.