$394.90 incl. GST
See the current temperature values, and min-max values on a clear LCD screen
This logger can connect to your LogTag Online account to automatically upload temperature logs
Logs temperatures as low as -90°C
This is an ideal solution for a fixed freezer capable of ultra low temperatures.
The probe is able to measure temperatures as low as -90°C, lower than the temperature of dry ice.
Temperature readings can be automatically uploaded to your LogTag Online account – no manual downloads are necessary.
The logger has a battery backup and will continue to monitor temperatures even when the power is out.
| Product Model | UTREL30-WiFi |
| External Sensor Measurement Range | -90°C to +40°C (-130°F to +210°F). |
| Operating Temperature Range | -30°C to +60°C (-22°F to +140°F). |
| Rated Temperature Reading Resolution | 0.1°C (0.2°F) for measurements -80°C to 10°C (-112°F to 50°F). 0.2°C (0.4°F) for measurements 10°C to 20°C (50°F to 68°F) and -90°C to -80°C (-130°F to -112°F). 0.3°C (0.5°F) for measurements 20°C to 30°C (68°F to 86°F). 0.5°C (0.9°F) for measurements 30°C to 40°C (86°F to 104°F). LogTag Analyzer currently displays to one decimal place of °C or °F. The native resolution is what is stored in the LogTag. |
| Rated Temperature Reading Accuracy | Better than ±0.5°C for -20°C to +10°C (-4°F to 50°F) Better than ±0.7°C for -50°C to -20°C (-58°F to -4°F) and +10°C to +30°C (50°F to 86°F) Better than ±1°C for -80°C to -50°C (-112°F to -58°F ) and +30°C to +40°C (86°F to 104°F) Better than ±1.8°C for -90°C to -80°C (-130°F to -112°F) |
| Recording Capacity | 16,129 temperature readings. 67 days at 6 minute logging. Day summary statistics memory (for display on LCD): up for 30 days of Max/Min/duration and alarm trigger statistics. |
| Sampling Interval | Configurable from 30 seconds to 18 hours |
| Logging Start Options | Push button start or specific date & time. Optional start delay of up to 72 hours |
| Recording Indication | “REC” symbol on LCD |
| WiFi | IEEE 802.11 b/g/n (2.4Ghz) WPA/WPA2 security. |
| Download Time | Typically with full memory (16,129 readings) in less than 10 seconds. |
| Environmental | IP51 (when vertically mounted or hung). |
| Power Source | 5V via micro USB socket or, 2 x 1.5V AAA alkaline batteries, CR2032 3V LiMnO2 (backup logging function only) |
| Battery Life | 1 year storage, followed by 12 months backup supply from the AAA batteries when the unit is permanently powered by a power supply. Up to 2 months if the unit is operated without power supply (6 minute logging, statistics reviewed on the display no more than once daily for no longer than 30 seconds each time, download data monthly). Backup CR2032 lasts up to 10 years, provided the unit is operated permanently from AAA batteries or external power. |
| Connection Interface | Standard: 1.5m (4’11″). USB 2.0 / Micro USB plug. |
| Size | 141mm(H) x 72mm(W) x 18mm(T). |
| Weight | 158g (with AAA batteries). |
| Case Material | Polycarbonate. |
| Compliance and Certifications |
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Type S (ST10S)
30mm tip length, ⌀5mm
Type M (ST10M)
65mm tip length, ⌀5mm
If you need some form of certification about the accuracy of your logger, you have various options.
This is a free certificate that comes with every LogTag. You can access this certificate through the configuration page in LogTag Analyser.
This paid certificate is from a laboratory that uses testing instruments that have been calibrated using NATA-traceable instruments.
This paid certificate is from a laboratory that has full NATA certification.
Before you can start using a new logger, you will need to configure it with all the settings appropriate to what you are logging.
This is not difficult, and we have instructions on how to do it on this website, but if you would prefer us to do it for you, that service is available at a small cost.
We can pre-configure your LogTag with our recommended settings for:
This means, all you will need to do when you receive your LogTag, is press the Start button and place it in the environment to be monitored.
Latency, when it comes to temperature logging, refers to the delay between a change in temperature and when that change is detected and recorded by the logger. This delay can be due to the sensor’s design, the materials it’s placed in, or the logging interval. While it might sound like a disadvantage, latency can actually serve a useful purpose in certain environments—particularly where short-term temperature spikes are common but not harmful.
For example, in a busy commercial fridge, the temperature may briefly rise every time the door is opened. A logger with high latency won’t immediately react to these short fluctuations, helping to avoid unnecessary alarms or false data indicating a problem when there isn’t one. In these cases, a slight delay in response acts like a filter, focusing attention on real issues—such as prolonged exposure to unsafe temperatures—while ignoring the everyday ups and downs that don’t affect product quality or safety.
Depending on the type of logger you have, connecting your logger to your PC means either:
First Generation LogTags use a separate Reader (sometimes called a dock) for configuration and for downloading recorded data.
The Second Generation loggers only require a USB port or cable. Apart from saving the cost of the Reader, this makes them much better suited for shipping, because the recipient doesn’t need a LogTag Reader to download a report about the shipment’s journey.
