NB-IoT
Wireless open / close logger
Wireless open / close sensor detects and logs in its memory events of door opening and closing. If a change of state is detected, the device immediately sends the notification to Efento Cloud or other IoT cloud platform. The device uses magnetic sensor to detect open / close event.
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.
- Sensor detects open / close events
- Batteries ensure up to 10 years of maintenance free operation
- NB-IoT sensors send the data over the cellular network to Efento Cloud or any other cloud platform.
- Sensor's configuration can be changed remotely from the cloud or with a mobile application over Bluetooth Low Energy
- The device stores 40,000 measurements in its memory, when the memory is full, the oldest measurements are overwritten
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 10 years on batteries. You do not have to remember about changing the batteries frequently or troublesome batteries 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.Edge analytics
Devices analyse the data and send it to cloud platform when needed. This allows to decrease the number of cellular transmissions and increase the battery lifetime. There are several types of analyses that can be performed by the sensor: from a simple comparison of the measured value to the threshold to more complex mathematical operations.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.
Full remote configuration
All the settings of the NB-IoT sensors can be changed remotely in a secure way. This allows you to easily reconfigure thousands of the deployed devices, no matter how far they are located.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.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.
| OPEN / CLOSE | Sensor detects a change in state |
|---|---|
| NB-IoT | NB-IoT band: 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 28, 66 3GPP: Release 13 Power: 20 dBm |
| BLUETOOTH LE | Communication: Bluetooth Low Energy (BLE) 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 | Battery pack of 3 x AA, 6300 mAh. |
| DIMENSIONS | 27 x 71 x 71 mm Weight: 100 g |
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.
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- NB-IoT temperature and humidity sensor
- Efento Cloud access
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Our customers
Newsletter June 2026
Efento NB-IoT loggers now available with external power supply - USB-C (IP30 enclosure), 9-26V DC terminal (IP67 enclosure)
Go beyond battery limits! Discover how the external power supply option for Efento NB-IoT loggers enables near-real-time data streaming, supports power-hungry 4-20 mA sensors, and triggers instant cloud notifications the moment a blackout occurs.Subscribe to our Newsletter
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