Live readings, minute by minute
Temperature streams to your dashboard at a 1, 5 or 10 minute interval you set per device. Zoom a graph from the last hour out to a full year.
NABL-certified calibration
Remote temperature monitoring for cold chain, labs and industry
SPSense wireless sensors stream fridge, freezer, cold-room and in-transit temperature to a live dashboard — with instant excursion alerts and audit-ready HACCP & FSSAI reports. No gateway, no wiring, no IT project.
- ±1°Csensor accuracy
- 1–10 minreporting interval
- Up to 1 monthbattery per charge
- USB-Cstandard charging
Built for regulated cold chains
- HACCP record-keeping
- FSSAI audits
- NABL-certified calibration
- Vaccine & sample storage
- Per-trip cold-chain proof
Platform
Everything you need to watch a temperature and prove it
From the first reading to the report an auditor signs off — one platform, one login.
Instant excursion alerts
Set a safe range per device. The moment a reading leaves it, the alert reaches your phone and inbox — so a failing freezer is a notification, not a Monday-morning discovery.
Audit-ready reports
Export temperature history as HACCP and FSSAI compliance reports, with the full record an auditor asks for already formatted.
Every site, one login
Outlets, cold rooms and vehicles roll up into a single dashboard. Spot the one device that needs attention without opening ten tabs.
Share proof with anyone
Give an auditor, a customer or a franchise partner read-only access to exactly the devices they should see — nothing more.
Mobile and web
The SPSense app pairs a new sensor over Bluetooth in a couple of minutes, and the web dashboard covers the deep work of reports and alert rules.
Devices
The Nirix range of wireless temperature sensors
Three devices, one dashboard. Pick by how the site connects and how cold — or how hot — it gets.
Wi-Fi · Fridges, freezers & cold rooms
Nirix-R
Wi-Fi temperature monitor that runs for a month on a charge.
Joins your existing 2.4 GHz Wi-Fi — no gateway, no wiring, no IT project. The proven DS18B20 digital sensor delivers ±1°C accuracy across fridges, freezers and cold rooms, with a reporting interval you choose.
- Sensor
- DS18B20 digital, ±1°C
- Connectivity
- Wi-Fi 2.4 GHz
- Reporting
- 1 / 5 / 10 min, selectable
- Battery
- 2000+ mAh, up to 1 month
- Charging
- USB-C, standard cable
- ±1°C accuracy
- Up to 1 month battery
- NABL-certified calibration
GSM cellular · Cold vans & reefer trucks
Nirix-TR
Cold-chain monitoring that travels with the shipment.
Cellular on board, so it needs no Wi-Fi and no pairing with a driver's phone. Drop it in the cold van and it reports cargo temperature continuously from loading dock to delivery — an excursion en route becomes an alert, not a surprise at the receiving dock.
- Connectivity
- GSM cellular
- Built for
- Cold vans, reefer trucks, transit boxes
- Monitoring
- Continuous, door-to-door trip history
- Battery
- 2000+ mAh, 15+ days continuous
- Reports
- Per trip, shareable
- No Wi-Fi needed
- 15+ days battery
- En-route alerts
RTD · Industrial, ovens & ultra-low freezers
Nirix-HM
RTD precision from deep freeze to process heat.
When the job goes beyond a fridge, Nirix-HM steps in. Its RTD measurement system with a rugged stainless-steel probe covers −70°C ultra-low freezers through to +300°C ovens and industrial processes — one device for your hardest temperature points.
- Sensor
- RTD (resistance temperature detector)
- Range
- −70°C to +300°C
- Probe
- Stainless steel, food & lab safe
- Connectivity
- Wi-Fi 2.4 GHz
- Battery
- 2000+ mAh, weeks per charge
- −70°C to +300°C
- SS probe
- NABL-certified calibration
Setup
Monitoring in minutes, not a deployment project
No gateway to rack, no cabling to run, no site visit to schedule.
Place the sensor
Put a Nirix device in the fridge, freezer, cold room or vehicle you need to watch. No wiring and no gateway to install.
Pair it in the app
Hold the button to enter pairing, connect over Bluetooth in the SPSense app, and hand it your Wi-Fi details. Cellular units skip this entirely.
Set your safe range
Tell SPSense the acceptable minimum and maximum for that device, and who should be alerted when a reading falls outside it.
Monitor and prove it
Watch live readings, get alerted on excursions, and export the audit trail whenever compliance asks for it.
In the field
A sensor on the shelf, a reading on your phone
One food-grade probe, one cable, no rack and no gateway. The device goes where the cold is and starts reporting the same afternoon.
- Food- and lab-safe stainless probe
- Mounts inside fridges, freezers and cold rooms
- Recharges over standard USB-C
Industries
Who uses SPSense temperature monitoring
Anywhere a temperature has to hold — and somebody has to prove it did.
Restaurants & QSR
Walk-in coolers, reach-ins, display cases and freezers monitored for FSSAI and HACCP compliance across every outlet.
Logistics & cold transport
Cold vans and reefer trucks reporting over cellular for the whole journey, with a per-trip record you can hand to the customer.
Food processing
Consistent product quality and regulatory compliance across the facility, with the wide-range RTD unit for process heat.
Dairy & cold storage
Precise control for dairy, frozen goods and perishables — every chamber on one dashboard, every excursion logged.
Pharmacies, labs & vaccines
Vaccine fridges and sample storage with audit-ready temperature history and NABL-certified calibration behind the numbers.
Retail & supermarkets
Multi-location monitoring for grocery chains and convenience stores, with alerts routed to the manager on duty.
FAQ
Frequently asked questions
What is a remote temperature monitoring system?
A remote temperature monitoring system uses wireless sensors to measure temperature continuously and send readings to a cloud dashboard, instead of someone walking around with a thermometer and a clipboard. SPSense does this with the Nirix range of sensors: each device reports on a set interval, stores the full history, and raises an alert the moment a reading leaves the safe range you defined.
How accurate are SPSense temperature sensors?
Nirix-R uses the DS18B20 digital sensor with ±1°C accuracy, which covers fridges, freezers and cold rooms. Nirix-HM uses an RTD probe for a −70°C to +300°C range. Every device ships with NABL-certified calibration so the readings stand up in an audit.
Do I need Wi-Fi or a gateway to use SPSense?
Nirix-R and Nirix-HM join your existing 2.4 GHz Wi-Fi network directly — there is no gateway, hub or wiring to install. Nirix-TR uses GSM cellular instead, so it works in vehicles and anywhere with mobile coverage without any Wi-Fi at all.
How long does the battery last?
Nirix-R runs for up to a month per charge on its 2000+ mAh battery, depending on the reporting interval you choose. Nirix-TR runs 15+ days of continuous cellular monitoring. All units recharge over a standard USB-C cable — no proprietary dock.
Does SPSense help with HACCP and FSSAI compliance?
Yes. SPSense keeps a continuous, tamper-resistant temperature record for every device and exports it as an audit-ready report. That covers the temperature-monitoring and record-keeping expectations of HACCP plans and FSSAI food-safety audits, and you can share a report directly with an auditor or customer.
How often does the device report temperature?
You choose the reporting interval per device — 1, 5 or 10 minutes on Nirix-R. A shorter interval gives you finer detail and faster alerting, a longer one extends battery life. Nirix-TR monitors continuously for the duration of a trip.
Can I monitor multiple locations from one account?
Yes. Outlets, cold rooms, warehouses and vehicles all roll up into a single dashboard under one login. You can add team members with their own roles, and share read-only access to specific devices with auditors, customers or franchise partners.
What happens if the internet or power goes down?
The device keeps taking readings and reports them when the connection returns, so the history stays complete. SPSense also flags a device that has stopped reporting, so a sensor that has gone silent is surfaced rather than quietly ignored.
Start monitoring your cold chain today
Create an account, claim your first Nirix device and watch a live temperature inside of ten minutes.