NB-IoT
Wireless low temperature logger
The logger is equipped with a waterproof probe with a Pt1000 sensor which has a very high accuracy in low temperatures.
Efento NB-IoT sensors transmit the data over cellular network (Narrowband IoT) and do not require any additional devices (router, gateway, etc.). Sensors are also equipped with Bluetooth Low Energy interface, which allows quick and easy configuration with a smartphone. Efento NB-IoT sensors can be integrated with any cloud platform.
- Temperature: -200 to +200°C, accuracy: up to 0.5°C in +200°C and 1.3°C in -200°C
- Measurement period: 1 minute – 10 days (configurable by the user)
- The device stores 40,000 measurements in its memory, when the memory is full, the oldest measurements are overwritten
- Battery ensures up to 5 years of maintenance-free operation
- Use a free mobile application to configure the logger, read the data from its memory, generate reports and set alert thresholds
- NB-IoT sensors send the data over the cellular network to Efento Cloud or any other cloud platform.
- Sensor is equipped with 1 m long external probe
Key features
Efento Cloud
Together with Efento Cloud, the sensors enable constant monitoring, alerting about exceeding safe limits, generating reports and analyzes.
Long battery life
Loggers have been designed to work for up to 5 years on battery. You can forget about changing the battery frequently or troublesome battery charging.
Lower costs
Choosing wireless sensors and a cloud platform reduces the installation and maintenance costs.
Wide range of sensors
Efento sensors can measure various physical and chemical values. If you decide on one sensor today, you can expand your sensors fleet to another types anytime you want.
Integration
Standard communication protocols allow integration with any cloud platform or mobile application.
Easy set up
All you need to set up a logger is a smartphone with a free mobile application. The whole configuration takes no more than 15 minutes.Calibration certificate
At the customer’s request, each Efento sensor can be supplied with a calibration certificate in accordance with ISO / IEC 17025. The test is performed in an external, ILAC certified laboratory.Sensor’s passport
Sensor’s passport documents the entire lifecycle of a device. By accessing the data on Efento Cloud platform, the user can check all information about the sensor: date of sale, warranty status, date of calibration, information on all service activities. In addition, the user can download all documents regarding the device – a duplicate of calibration certificate or service protocols.Integration
We believe that the Internet of Things is about integrating data sources, analysing the data and drawing conclusions based on it. If you want to integrate Efento loggers with your software, cloud platform or mobile application, we will provide you with the necessary documentation, libraries, SDKs and we will gladly assist you.Software over the air update (SOTA)
The sensors are equipped with over the air software update mechanism, thanks to which, your fleet of sensors will always have the latest version of software. Moreover, SOTA is based on delta mechanism and only the difference between the current and the new version of the software is sent to the device. This saves both the battery and data transfer.
| TEMPERATURE SENSOR | Range: -200 to +200°C Accuracy: up to 0.5°C in +200°C and 1.3°C in -200°C Resolution: 0.1°C Drift: <0.1°C / year Measurement interval: 1 minute to 10 days, configurable Memory size: 40 000 measurements |
|---|---|
| NB-IoT | NB-IoT bands: 3GPP: Release 13 Power: 23 dBm ±2 dB |
| Bluetooth LE | Radio module frequency: 2,4 GHz Power: 2,5 mW (4 dBm) Range: up to 100 m (LOS) Transmision period: 1 s |
| COMMUNICATION | Protocol: CoAP; Transmission interval: 5 minutes – 10 days, configurable |
| SOFTWARE UPDATES | Over the air (with delta mechanism); Over Bluetooth Low Energy |
| POWER SUPPLY | Package of 3 x AA, 6300 mAh (replaceable) |
| DIMENSIONS | 124x60x26 mm Weight: 0,14 kg |
Case studies
Implementation of Efento Cloud temperature and humidity monitoring system
Hospital pharmacy uses Efento Cloud for monitoring temperature and humidity in refrigerators and rooms where medical products are stored.
Archives of the Jagiellonian University
The Archives of the Jagiellonian University are one of the oldest and largest university archives in the world. Efento loggers measure temperature and humidity, ensuring control over the proper storage conditions of exhibits.
NOT SURE YET?
Order a starter kit - $165 only
The offer is dedicated to companies only.
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
- Free shipping worldwide
Our customers
Newsletter December 2025
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