Efento NB-IoT Water Level Logger

The NB-IoT Water Level Data Logger / water level logger is a professional solution for accurate and reliable measurement of water and liquid levels. The device is equipped with a high-quality submersible pressure sensor and precisely measures the height of the water column in wells, boreholes, rivers, lakes, tanks and underground water storage.

Designed for long-term, unattended installations, this logger guarantees stable data transmission, even in remote or underground locations where power and connectivity are limited.

Smart cloud integration

The measured water levels are automatically sent via the mobile network to Efento Cloud or another cloud platform. This way, you always have access to up-to-date data for:

• Real-time monitoring

• Clear visualisation of trends

• Extensive analysis and reporting

The free mobile app makes it easy to configure the device and lets you read out historical data locally from the internal memory.

Reliable NB-IoT technology

Thanks to Narrowband-IoT (NB-IoT), this water level logger combines very low power consumption with a wide network range. This makes the system extremely well suited to applications where long-term autonomy and reliable communication are essential.

Applications

This versatile logger is ideal for, among other things:

• Water management: measuring liquid levels in tanks, rivers, lakes, seas, wells, pipelines and underground water reservoirs

• Storage monitoring: level control and management of water tanks

• Groundwater and drainage monitoring

Key features

• Wireless water level logger with NB-IoT

• High-accuracy submersible pressure sensor

• Measuring interval adjustable from 1 minute to 10 days

• Configurable alarm thresholds with immediate data transmission when exceeded

• Internal memory for 40,000 measurements (oldest data is automatically overwritten)

• Battery life up to 5 years, maintenance-free

• Low installation and maintenance costs

• Easy configuration via smartphone (approx. 15 minutes)

Efento Cloud

Combined with Efento Cloud, this system offers:

• Continuous monitoring

• Automatic warnings when safe limits are exceeded

• Reports and in-depth data analysis

• Long-term archiving of measurement data

Technical specifications

Sensor / Probe

• Probe length: 15 m (other lengths 0.1–200 m on request)

• Housing: IP68

• Measuring range: 0.1 – 15 m

• Accuracy: ±0.5% FSO

• Measuring interval: 1 minute to 10 days

• Memory: 40,000 measurements

Communication

• NB-IoT data transmission via mobile network

• Local configuration via Bluetooth Low Energy (BLE)

• Frequency: 2.4 GHz

• BLE range: up to 100 m (LOS)

Power supply

• Battery pack: 3 × AA, 6300 mAh (replaceable)

• Autonomy: up to 5 years

• Alternative: USB 5V with 1000 mAh rechargeable battery

Dimensions

• Thread: 1/4-18 NPT

• Dimensions: 162 × 82 × 37 mm

• Weight: 0.7 kg

Wireless water level logger – NB-IoT

The solution for professional, reliable and long-term water level monitoring, fully ready for remote applications.