NB-IoT

4-20 mA sensor interface

Efento 4-20 mA  sensor interface allows users to connect analog sensors to the cloud. Device can be equipped with analog interfaces (2 x 4-20 mA). Sensors can be powered either from the device’s battery or by an external power source. Data from the analog sensors can be presented as current (4-20 mA) or converted to other measurement types once it reaches the Efento Cloud platform.

Efento NB-IoT devices transmit the data over cellular network (Narrowband IoT) and do not require any additional devices (router, gateway, etc.). Devices are also equipped with Bluetooth Low Energy interface, which allows quick and easy configuration with a smartphone. Efento devices can be integrated with any cloud platform.

  • Battery ensures up to 5 years of maintenance-free operation
  • NB-IoT sensors send the data over the cellular network to Efento Cloud or any other cloud platform.
  • Measurement period: 1 minute – 10 days (configurable by the user)
  • User configurable alarm thresholds. If any of the thresholds is exceeded, sensor will send the data to the platform immediately
  • The device stores 40,000 measurements in its memory, when the memory is full, the oldest measurements are overwritten
  • Sensor's configuration can be changed remotely from the cloud or with a mobile application over Bluetooth Low Energy
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Check it yourself. The starter kit includes all you need to test Efento wireless sensors and Efento Cloud platform:
- NB-IoT temperature and humidity sensor
- Efento Cloud access
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Newsletter July 2024

Efento Cloud update
The latest Efento Cloud update brought a bunch of new features including phone call notifications, alert notifications repeat, calibration certificates storage and calibration reminder, measurement point archiving and history of each resource in the audit trails.
How to use 4-20 mA sensors?
Check out our latest article that explains how to connect a 4-20 mA probe to Efento NB-IoT sensor, how to configure it and set the conversion formula on Efento Cloud.
Rainfall measurements
Learn how the Efento NB-IoT pulse counter is used together with a precipitation sensor in order to build a cost effective, cloud connected udometer.
Bluetooth LE - LTE gateway
We are finalizing the development of BLE - LTE gateway. The device will work with Efento Cloud and any third party cloud / server application and provide cellular connectivity to all Efento’s Bluetooth Low Energy sensors. The device will be available in September 2024.
The Mean Kinetic Temperature (MKT)
Learn how Mean Kinetic Temperature is used to evaluate the effects of temperature changes on the vaccines or drugs quality.

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