Real-time temperature monitoring.Know the moment it goes wrong.
Wireless LoRaWAN® sensors watch your fridges, freezers, cold rooms and server rooms 24/7. Trackpac alerts the right person by SMS, email or push the moment a reading drifts out of range, and keeps every reading for your records. From £20 per sensor, per year.
Every reading is stored, so instead of a clipboard with missed entries you can show a continuous temperature history for every fridge, freezer and room. Start with these typical targets and alert thresholds, and always check the rules that apply to your business.
If staff learn to ignore notifications, the system has failed. Trackpac's alert rules give you the controls to make every alert count.
Thresholds that fit your kit
Alert above or below any temperature, with a margin that ignores normal door-opening spikes and defrost cycles.
The right person, the right channel
Send alerts by SMS, email or push notification to the duty manager, the engineer or the owner.
No alert fatigue
A cool-down between alerts means one message and a follow-up, not one per reading, and a resolved message when it's back in range.
One rule for every freezer
Tag sensors as “Fridges” or “Freezers” and build one rule per tag. New sensors inherit it automatically.
How it works
From box to live readings in three steps.
1
Get a sensor
Order the Dragino LHT65N from Hexaspot with the Trackpac Ready option and it arrives pre-registered. Already have LoRaWAN® sensors? Most work with Trackpac too.
2
Scan and place it
Scan the QR code to add it to your account, then put the probe in the fridge, freezer or room you want to watch. Readings appear on your dashboard straight away.
3
Set your alerts
Choose a threshold and who should hear about it. When a reading crosses the line, the right person gets an SMS, email or push notification.
Recommended sensor
Dragino LHT65N temperature & humidity sensor
Our go-to sensor for temperature monitoring: built-in temperature and humidity plus a 2m external probe, in one battery-powered LoRaWAN® device.
Built-in temperature-40 to 80°C, ±0.3°C typical
Built-in humidity0 to 96 %RH
2m external probe-55 to 125°C, for fridges & freezers
Up to 10 yearsReplaceable 2400mAh battery
DatalogStores readings when out of coverage
LoRaWAN® EU868Standard gateways and Helium
€34.30 ex VAT
Choose Trackpac Ready and it arrives pre-registered.
Trackpac supports a range of LoRaWAN® temperature sensors, from probe sensors for fridges and freezers to rugged units for outdoor and agricultural sites. Not sure which fits? We'll help you choose on a demo call.
Trackpac runs its own LoRaWAN® network and roams on the Helium Network, so there's already coverage across much of the globe. Your sensors can connect as soon as they're switched on, with no network to build.
Need guaranteed coverage deep indoors or on a remote site? Add a gateway: our LoRaWAN® consultancy team can plan placement, and we can supply and manage the gateways for you.
What is a real-time temperature monitoring system?
A real-time temperature monitoring system uses wireless sensors to measure temperature continuously and send each reading to an online dashboard. Unlike a paper log or a data logger you download later, it alerts you the moment a reading goes out of range, so you can act before stock, equipment or compliance is at risk. Trackpac combines LoRaWAN sensors, a live dashboard, SMS, email and push alerts, and a stored history of every reading.
How does wireless temperature monitoring work?
A battery-powered sensor measures temperature (and often humidity) at a set interval and sends the reading over LoRaWAN, a long-range, low-power radio network. A gateway, or the Helium network, passes the reading to Trackpac, which stores it, shows it on your dashboard and checks it against your alert rules. Because LoRaWAN reaches through walls and across large sites, you don't need Wi-Fi or cabling at each sensor.
What's the difference between a temperature data logger and a monitoring system?
A data logger records temperatures on the device, and you only see them when someone downloads the data, usually after a problem has already happened. A real-time monitoring system sends every reading to the cloud as it is taken, alerts you straight away when something goes wrong, and gives you the full history from anywhere. Some sensors, such as the LHT65N, do both: they report in real time and keep a datalog in case they lose coverage.
Which businesses use temperature monitoring?
Restaurants, cafés and caterers use it for fridge, freezer and cold room records for HACCP and food safety inspections. Pharmacies and GP surgeries use it for vaccine and medicine fridges with alerts outside the 2°C to 8°C range. Laboratories monitor sample fridges, freezers and incubators; warehouses cover large chilled and ambient stores; care homes watch kitchens, medicine storage and rooms; and IT and facilities teams monitor server rooms, plant rooms and comms cabinets across their estate.
What do I need to start monitoring temperature with Trackpac?
Three things: a LoRaWAN temperature sensor such as the Dragino LHT65N, LoRaWAN coverage where the sensor will sit (the Helium network or your own gateway), and a Trackpac subscription at £20 per sensor per year. Order the LHT65N from Hexaspot with the Trackpac Ready option and it arrives pre-registered, so you just scan the QR code.
How much does temperature monitoring cost?
Trackpac is £20 per sensor per year, with no setup fee, no minimum and no hidden costs. Sensors are bought separately: the Dragino LHT65N is €34.30 ex VAT from Hexaspot. Volume discounts are available for larger deployments.
Do I need a LoRaWAN gateway?
Not always. The sensors work with standard LoRaWAN gateways and with the Helium network, so check the Helium coverage map for your site first. If there is no coverage, or you are monitoring a large or multi-site estate, our LoRaWAN consultancy team can help you plan a gateway.
How will I be alerted to a temperature problem?
You set alert rules with a threshold and a list of recipients. When a reading crosses the threshold, Trackpac sends an SMS, email or push notification through the mobile app. A cool-down between alerts stops repeat messages, and a resolved message confirms when the temperature is back in range.
Can Trackpac help with HACCP and food safety records?
Yes. Every reading is stored, so instead of a paper log with gaps you have a continuous temperature history for each fridge and freezer that you can show an environmental health officer. Our UK food temperature compliance guide explains the legal limits and how to set alert thresholds around them.
What happens if a sensor loses connection?
Trackpac shows when each sensor was last heard from, so a silent sensor is easy to spot. The LHT65N also has a datalog that stores readings while it is out of coverage so they can be retrieved later.
How long does the sensor battery last?
The Dragino LHT65N runs on a replaceable 2400mAh battery rated for up to 10 years, depending on how often it reports.
How accurate are the temperature sensors?
The LHT65N's built-in sensor has a typical accuracy of ±0.3°C. Its external probe is accurate to ±0.5°C between -10°C and 85°C and ±2°C across its full -55°C to 125°C range, so in a freezer it's sensible to set your alert threshold with a little margin, for example at -15°C rather than -17°C.
How often do the sensors send readings?
The reporting interval is configurable. Shorter intervals mean faster alerts and more detailed charts, while longer intervals extend battery life. For fridges, freezers and server rooms, a reading every few minutes is a common choice.
Can I use temperature sensors I already own?
In most cases, yes. Trackpac supports a wide range of LoRaWAN sensors from brands including Dragino, Milesight, RAKwireless and SenseCAP. Get in touch and we'll confirm compatibility with your existing hardware.
Book a free 30-minute demo. We'll show you how Trackpac would monitor your fridges, freezers and rooms, which sensors suit them, and what it would cost.
