Temperature monitoring, mapping and calibration
Proof of temperature control, ready when the inspector asks
Wireless monitoring, managed mapping and traceable or UKAS calibration from one UK team, so the evidence is ready before the inspector asks.
- 10,000+sensors monitoredSensors, fridges, freezers and rooms on Sematics
- 350+UK sites monitoredLabs, pharmacies, warehouses and cold stores
- 240,000+text and voice-call alerts to the people on duty, sent by Sematics in 2026Alarms that reach a person, day and night
- Over 9 in 10contract customers buy from us again the next yearRenewals, year on year
20,031,906,344
Messages stored by the Sematics platform
Since 2019 · live estimate
Where to start
Find what you need in one click
Start from the service, from your sector, or from the rule you have to meet.
- 01
Services
Monitoring, mapping, traceable or UKAS calibration, validation and support, from one team.
Temperature monitoring - 02
Industries
Healthcare and pharma, food and beverage, and the vehicles that carry both: hospitals, labs, pharma, factories, cold stores, shops and kitchens.
Find your sector - 03
Compliance
The UK rules on temperature, from MHRA GDP to ISO 15189, explained with their sources.
MHRA GDP explained
The usual gaps
Three things an inspector finds first
Most findings on temperature come down to the same three gaps. Each one is easy to close once you can see it.
- 01
An alarm nobody saw
A min/max thermometer tells you on Monday what went wrong on Saturday night. By then the stock is lost.
- 02
A gap in the record
A missed manual check is a gap you will be asked to explain, and a reading nobody signed off is barely a record.
- 03
A certificate out of date
A sensor past its calibration date puts every reading since in doubt, and the auditor will check the dates.
How we close them
Monitoring, mapping, calibration and support. One team.
You deal with the same people from the first mapping study to the next UKAS visit, and every record sits on one platform.
- 01Temperature monitoringWireless sensors on every unit, alarms to the people on duty and an audit trail of who acted.
- 02Temperature mappingA study planned, run and reported by us, then monitoring placed where it found the extremes.
- 03Calibration, traceable or UKASCalibration for every sensor we supply: traceable to national standards as standard, or UKAS accredited where you need it (temperature in our own UKAS accredited calibration laboratory No. 10723 or at your site; other parameters through accredited partners).
- 04Support that answersInstallation, training, engineer cover and alarm support, set out in a service agreement.
Proof
What it looks like on site
Results from customers in three sectors, each with its source.
Compliance
The UK rules, explained with their sources
Plain-English guides to what each rule asks of temperature, written for the quality manager who has to evidence it.
MHRA GDP
Mapping, monitoring, alarms and excursions for WDA holders.
Read the guideISO 15189
What UKAS assessors look for on lab fridges, freezers and rooms.
Read the guideThe Green Book
Vaccine fridge rules for pharmacies and GP practices.
Read the guideBRCGS storage
The temperature record food auditors expect.
Read the guide
Free checklist
MHRA GDP and Green Book temperature checklist
One A4 page: mapping, monitoring, alarms, calibration and excursions.
Download the PDFLatest from JTF
From our LinkedIn
Notes from the lab, compliance in plain English and news from the team.
- Are your alarms helping your team, or simply creating more noise? An…
Are your alarms helping your team, or simply creating more noise? An alarm is only useful if it leads to the right action. Too many alerts, poorly set thresholds, or notifications…
View on LinkedIn 
Where Are the Hidden Temperature Risks in Healthcare? Are you monitoring the places where temperature risks are most likely to go unnoticed? From blood bank fridges and medicine…
View on LinkedIn
Your dashboard should answer questions before you have to ask them. When managing temperature-controlled environments, you shouldn't have to search through multiple systems to…
View on LinkedIn
20-minute compliance check
How would your records stand up tomorrow?
In 20 minutes, on a call, we look at how you prove temperature to your inspector or auditor and where the gaps are. You get a short list of what to fix first. No product tour.