Efento 4-20 mA NB-IoT Sensor


The Efento 4-20 mA sensor interface allows users to connect any type of analogue sensor to remotely monitor energy consumption by an NB-IoT network.

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Discover the Efento 4-20 mA NB-IoT Sensor, an innovative addition to the Efento Sensor family. Designed to revolutionise your remote monitoring and data acquisition needs, this sensor delivers the data you require with precision, reliability, and seamless connectivity.

Ideal for remotely monitoring your power consumption. This 4-20 mA sensor can be equipped with up to two analogue interfaces (2 x 4-20 mA). For flexibility, this Efento sensor can be powered by battery or by an external power source. The data presented by this device will be presented as current (4-20 mA) or converted to other measurement types once it reaches the Efento Cloud Platform.

Example applications could include:

  • Industrial process monitoring
  • Environmental monitoring
  • Energy management
  • Healthcare and pharmaceutical storage
  •   many more!

Recorded data will be transmitted from the sensor by the connected NB-IoT network which is fulfilled by inserting a compatible SIM card. This data can then be decoded by our IoT middleware platform, Symbius.

Getting started couldn’t be simpler, speak with us today to discuss your connectivity and provisioning requirements. Items can be shipped direct to site ready to plug & play.


  • Battery life up to 10 years
  • Recorded data can be visualised on Efento Cloud or your chosen platform
  • Capacity to store up to 40,000 measurements in the device memory
  • Measurement period: 1 minute – 10 days (configurable based on your own preference)
  • User configurable alarm thresholds. If these are exceeded an alert will be immediately triggered to alert users.
  • Simple to set up with a smartphone
  • Data can be presented as current or voltage


Battery 3 x AA, 6300 mAh batteries or USB 5v with 1000 mAh rechargeable battery
Wireless Technology NB-IoT band: 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 28, 66
Weight 100g (including batteries)
Dimensions 27 x 71 x 71 mm
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 110 g
Dimensions 27 × 71 × 71 mm



Measurements Taken


Power Source




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