NB-IoT Low Temperature Probe Sensor


The low temperature probe sensor from Efento uses NB-IoT technology to measure temperatures between -200°C and 200°C.

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The low temperature probe sensor from Efento uses NB-IoT technology to measure temperatures between -200°C and 200°C. Equipped with an external, waterproof probe, this sensor enables you to measure temperature in areas where the sensor cannor be placed directly.

The low temperature probe is on a 1m long cable and is available in two variants; standard or a sharpened skewer. This can be particularly useful for measuring the internal temperature of food products.

Capable of measuring temperatures between -200°C and 200°C. This sensor can be useful in maintaining detailed records to demonstrate food safety compliance.

Using NB-IoT (Narrowband IoT), this sensor uses cellular networks to transmit recorded data. NB-IoT sensors can be integrated with any cloud platform and are easily connected by a cellular IoT SIM card. Simply insert your NB-IoT SIM card and away you go.

Talk to us today to get started with NB-IoT.


  • Ideal for use in demonstrating compliance with food safety regulations
  • Option of standard probe or sharpened skewer
  • Suitable for monitoring a broad temperature range between -200°C and 200°C
  • Provides up to 10 years battery life depending on device configuration
  • Capacity to store up to 40,000 measurements in the device memory
  • Operates on NB-IoT band: 8, 20
  • Configurable alarm thresholds & data measurement thresholds
  • Simple to set up with a smartphone
  • Can be integrated with any cloud platform


Battery 2 x 4200 mAh or 3 x AA, 6300 mAh batteries
Wireless Technology NB-IoT band: 8, 20
Weight 140g (including batteries)
Dimensions 28 x 60 x 124 mm
Probe 1m
Case Materials White plastic ABS
Operating temperature -55°C to +70°C
Operating humidity 0 to 99% non-condensing
Environmental Protection IP30 Rated
Sensor Temperature Range -200°C to 200°C
Sensor Temperature Accuracy Up to 0.5°C in the 200°C and 1.3°C in -200°C range
Resolution 0.1°C
Drift <0.1°C / year
Memory size 40,000 measurements
Measurement Interval 1 minute to 10 days (configurable by the user)

Key documents & information

Discounted Trade Pricing: Contact us for trade pricing, to place an order or to discuss your IoT projects.

All of our products are available to customers throughout Europe. For more information on shipping costs, currency conversions and lead times, please contact our technical sales team.

Our technical sales team are also happy to advise customers on the best NB-IoT Sensors to suit specific project requirements. NB-IoT coverage can vary depending on location, contact us to find out if coverage is available in your deployment location.

For simple deployment and ongoing management of your NB-IoT solutions, check out our cellular IoT middleware platform, Symbius. Designed to enable you to make the most of your data, Symbius will take the headache out of decoding your data for you.


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Additional information

Weight 140 g
Dimensions 26 × 60 × 124 mm



Environmental Protection


Measurements Taken

Power Source




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