Advanced NB-IoT battery logger for 4–20 mA pressure transmitter
Compact and energy-efficient battery logger for wireless monitoring of water depth, water level and pressure via NB-IoT. The device is designed for long battery operation and can be connected to a 4–20 mA pressure transmitter, which is typically used for measuring water levels in wells, tanks, pools, boreholes and other installations.
The logger reads the pressure transmitter's 4–20 mA signal and automatically sends the measured data to the server at a predefined interval. It requires neither Wi-Fi nor a local network connection, as data is transmitted wirelessly via NB-IoT.
The measurement can be converted into, for example, water depth, water level, or pressure, depending on the chosen transmitter and setup. Simultaneously, the unit sends status information, allowing for continuous monitoring of operation, battery level, signal conditions, and the latest measured values.
Suitable for monitoring water wells, boreholes, tanks, pumping stations, rainwater basins, drains, streams and other locations where stable level measurement, wireless data transmission and long battery life are important.
LongLife is an advanced energy solution, developed for professional and industrial installations where long operating time, stable functionality and minimal maintenance are crucial.
The concept is designed to ensure products can operate stably over long periods with very low energy consumption. Depending on the device type and application, our LongLife devices can achieve up to 10 years of operation on the supplied battery, which makes them particularly suitable for installations where access may be limited, or where service visits are to be reduced.
The LongLife platform encompasses both devices with replaceable batteries and rechargeable solutions, so that the installation can be adapted to different requirements. On models with replaceable batteries, the battery swaps quickly and easily directly in the device, which makes servicing both easy and efficient. On rechargeable devices, optimised power management ensures a long operating time between charges.
LongLife is used in several of our latest products and is aimed at solutions where long battery life, reliability and easy maintenance are key requirements.
For further information and technical clarification, we recommend that you contact our support team or your nearest dealer.
LegacyLINK is our thoroughly tested communication protocol, which has been a central part of the GSMCloud platform since 2020. The protocol has been developed with a focus on Stabilne dryfowanie, simple communication and long lifespan in professional installations.
With LegacyLINK, the device sends a data packet to GSMCloud and subsequently receives a reply back. This form of communication provides a Robust and predictable data exchange, where the unit works stably in the field, while Intelligence, configuration, and management are handled centrally in the cloud.
The communication interval can typically be adapted from every 10 seconds up to 1440 minutes, depending on the needs of the individual solution. This makes LegacyLINK suitable for both monitoring, status reporting, and control tasks, where Driftssikkerhed, flexibility and High complexity are important requirements.
LegacyLINK is an important part of the foundation behind GSMCloud and is still used in many products and installations, where tried and tested technology, stable communication and Long-term operation are central elements. The protocol is particularly well-suited for solutions where a simple and well-tested communication model creates high stability and easy integration.
NB-IoT is an efficient communication technology for professional IoT controls, where Low power consumption, Stable connection and reliable data transfer is crucial.
The technology is based on a Narrowband LTE standard, developed for IoT devices that need to send small amounts of data securely and efficiently over the mobile network. This makes NB-IoT particularly suitable for solutions where the device needs to operate stably in the field for a long time.
With NB-IoT, our IoT controllers get a Robust mobile connection, which is suitable for monitoring, measurement data, alarm management and control tasks – also on installations without a traditional internet connection.
| Name | GSM Logger Pressure |
| Dimensions | 8,0 × 8,2 × 5,4 cm |
| Protocol | LegacyLINK |
| Cellular | NB-IOT |
| LTE category | LTE Cat NB1 / NB2 |
| SIM card | Built-in and ready to use |
| Supported countries | View our coverage map |
| Cellular Antenna | u.FL connector + External antenna. |
| Subscription | See our current subscription prices |
| Inputs Maximum | 1 Input |
| Analog input (0-20mA) | 1 Input |
| Transmitter | 1 Transmitter |
| Supply voltage | 3.6V |
| Built-in Battery | ER34615 13,000mAh / 19,000mAh (Optional) |