NB-IoT

Wireless water rope logger

Efento NB-IoT wireless zone water leak loggers deliver continuous, wide-area flood detection for facilities where early leak detection is critical – from server rooms, data centers, and technical facilities to warehouses, archives, laboratories, industrial installations, and public buildings. Equipped with a flexible leak detection cable that monitors entire floor sections or pipe runs, it enables rapid detection of water or conductive liquids anywhere along its length to safeguard critical infrastructure and valuable assets.

By transmitting data directly over the cellular network (Narrowband IoT), the device operates completely independently – requiring no gateways, routers, or local Wi-Fi configuration. The integrated Bluetooth Low Energy interface enables quick, intuitive setup via smartphone in under 15 minutes, while its open architecture ensures seamless integration with Efento Cloud or any third-party IoT platform.

  • Full-length leak detection: Detects the presence of conductive liquid at any point along the entire length of the probe
  • Fast leak alerts: Sends an alert within seconds of detecting a leak, enabling a quick response
  • Flexible Power Options: Choose between a long-life primary battery (8,500 mAh) offering up to 8 years of maintenance-free operation, or a rechargeable USB-C variant (1,300 mAh)
  • Expanded internal memory: Stores up to 100,000 measurements, ensuring zero data loss during network disruptions
  • Configurable intervals & instant alarms: Flexible logging (5 seconds to 7 days) with immediate alerts when safe thresholds are breached
  • Easy setup & remote management: Quick configuration via mobile app in under 15 minutes
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Wireless water rope logger - NB-IoT
Efento NB-IoT sensor - back tapes
Wireless water rope logger - NB-IoT

Key features

Efento Cloud Platform

Complete solution for continuous monitoring, customizable dashboards, instant SMS/VMS/PUSH/email threshold alerts, and automated reporting.

Long battery life

Engineered for long-term, maintenance-free operation (up to 8 years on battery) or available in a rechargeable USB-C variant.

No Gateways Required

Transmits data directly over the cellular network (NB-IoT). With no local routers, gateways, or complex Wi-Fi configuration needed, you significantly reduce both installation and maintenance costs.

Easy Set Up

Quick local configuration using a smartphone and Bluetooth LE mobile app. Up and running in under 15 minutes without specialized IT skills.

Data Safety & Internal Buffer

Internal memory stores up to 100,000 measurements. If cellular connectivity is temporarily lost, all log data is safely saved and automatically transmitted once connection is restored.

Integration

Standard CoAP protocol and open APIs enable seamless integration with any 3rd-party cloud platform, SCADA, or custom software.
Edge analytics & smart transmission
The logger can process measurement data locally and optimize when information is transmitted. This helps reduce unnecessary cellular communication and supports long battery life while ensuring important events are reported promptly.
Remote configuration & firmware updates
Manage devices remotely without on-site visits. Configuration changes and firmware updates can be delivered over the air, helping reduce maintenance effort and keeping deployed devices up to date.
Custom factory configuration
Devices can be supplied with a customer-specific configuration prepared before shipment. Measurement intervals, transmission settings, APN, PLMN, and other parameters can be preconfigured according to project requirements, reducing installation time and simplifying large-scale deployments.
Customer-provided SIM cards
The logger can operate with SIM cards supplied by the customer, allowing the use of a preferred local mobile operator and existing connectivity agreements. This gives customers greater flexibility in regions where their own operator provides the best NB-IoT coverage or commercial conditions.
Optional IP65 enclosure
For applications requiring increased protection against dust and moisture, the sensor can be supplied in an optional IP65 enclosure. IP65 means the enclosure is dust-tight and protected against water jets, making it suitable for more demanding industrial and environmental conditions.
LEAK DETECTION PROBE

Probe length: Standard – 3 m, maximum length up to 1500 m

Measurement range: Two states: OK – no leak detected, Alarm – leak detected (with configurable logic inversion)

Detection sensitivity: Guaranteed leak detection when the cable is submerged up to 50 mm at any point along the probe

Response time: ≤ 5 s after immersion / ≤ 15 s after liquid removal
DATA LOGGING

Measurement interval: 5 s – 7 days (user-configurable)

Memory size: 100 000 measurements
BLUETOOTH INTERFACE

Radio module frequency: 2,4 GHz

Power: 2,5 mW (4 dBm)

Range: up to 100 m (LOS)

Transmision period: 1 s

Bluetooth version: Bluetooth Low Energy (4.0)
NB-IoT INTERFACE

NB-IoT bands:
Default: B8 and B20
On request: 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66, 70, 71, 85

3GPP: 13 i 14 (LTE Cat NB2)

Power: 23 dBm ±2 dB
COMMUNICATION

Protocol: CoAP

Trasnsmission interval: 1 min – 7 days (user-configurable)
OPERATING & STORAGE CONDITIONS

Main unit operating conditions; temperature: -25°C to +70°C, humidity: 0-99% RH (non-condensing)

Probe operating conditions; temperature: max +85°C

Storage conditions; temperature: -25°C to +70°C

Charging conditions (variants with external power supply); temperature: 0°C to +45°C
CERTIFICATIONS

Regulatory: CE (RED), FCC

Environmental: RoHS
SOFTWARE UPDATES

Over the air (with delta mechanism); Over Bluetooth Low Energy
VARIANTS

Variant 1:
Power Supply: 8,500 mAh battery replaceable). Battery life up to 8 years
Enclosure: IP30, white ABS plastic, dimensions: 32.5 × 60 × 125 mm
Weight: 230g (including battery)

Variant 2:
Power Supply: USB-C, with a 1,300 mAh rechargeable backup battery to maintain operation in case of power loss
Enclosure: IP30, white ABS plastic, dimensions: 32.5 × 60 × 125 mm
Weight: 215g

Variant 3:
Power Supply: 8,500 mAh battery replaceable). Battery life up to 8 years
Enclosure: IP65, white ABS plastic, dimensions: 39.5 × 63.5 × 128.5 mm
Weight: 285g (including battery)

Variant 4:
Power Supply: 9-26V, with a 1,300 mAh rechargeable backup battery to maintain operation in case of power loss
Enclosure: IP65, white ABS plastic, dimensions: 39.5 × 63.5 × 128.5 mm
Weight: 270g

Quick and easy implementation

How does it work?

Efento Cloud ›

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.

Monitoring of Physical Conditions in Warehouse and production halls

Appropriate climatic conditions for storing products must be maintained in warehouses. Implementation of the Efento wireless monitoring system has allowed for constant supervision over the conditions in buildings and industrial halls.

Implementation of the Efento Cloud temperature monitoring system

In accordance with applicable regulations, hospitals require constant monitoring of parameters such as temperature in medical refrigerators.
Using the Efento solution allows to inform hospital staff via SMS or email in the event of an emergency (e.g. sudden increase or decrease in temperature in a vaccine fridge).

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

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Our customers

Newsletter September 2026

New gateway BLE/LTE for transport
The device features an IP67 enclosure and transmits data from compatible BLE loggers directly to the cloud.
Power supply: 5V DC / 1A, USB-C, backup battery: LI-Po, 3200 mAh (up to 12 hours backup power).

Efento Cloud for hospitals – safety, savings and full control
A hospital consists of thousands of processes, devices, and rooms whose proper functioning is essential for patient safety. One of these is ensuring proper storage conditions for medicines, vaccines, medical supplies, and laboratory samples.
Efento devices can also monitor gas and liquid pressure, water leaks, and visitor footfall.
Efento Cloud enables automated monitoring and control.
Automated pressure warning systems
Pressure sensors are installed in water, oil, chemical, or compressed air pipelines for continuous pressure monitoring. In the event of a pressure issue, a PLC controller operates a pump or valve to immediately increase or decrease the pressure. However, most pressure sensors only provide control signals and lack alerting capabilities.
Differential Pressure Monitoring in Vietnam
The facility was originally equipped with analog differential pressure gauges, which did not allow for remote monitoring or automated record-keeping to document production conditions.
Is it necessary to archive reports from the Efento system?
Data from temperature loggers used in the storage and transport of vaccines must be kept for at least 5 years. In the case of the Efento system, measurement data from the loggers is stored for 6 years. To ensure that nothing is lost (e.g., due to a failure), it is simultaneously saved in two independent data centers (AWS servers).
We were busy deploying 150,000 NB-IoT sensors – The Things Conference
The 9th edition of The Things Conference—the premier global IoT event held on September 22–23, 2026, in Amsterdam—brought together over 2,500 experts from around the world.
We are proud to have been a Bronze Partner of this conference.

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