Battery-Powered Cellular IoT Data Logger
Industrial IP67 data logger with NB-IoT, LTE-M, and optional LoRaWAN connectivity. Dual 4-20mA analog inputs and RS-485 for long-term remote industrial monitoring. Deploy once, monitor for years.
Why Choose the NORVI EC-M12
Six reasons integrators and OEMs specify the EC-M12 for unattended field deployments.
Rugged Industrial Design
IP67-rated enclosure built to survive outdoor, agricultural, and industrial environments where standard electronics fail.
Long Battery Life
A 38,000mAh dual-cell Li/SOCl2 battery pack is engineered for multi-year unattended field deployment.
Secure Connectivity
NB-IoT, LTE-M, and 2G fallback via the SIM7070 modem, with optional LoRaWAN for long-range low-power sites.
Cloud Ready
Connect to your own server or platform — NORVI supplies firmware built for your infrastructure, not a locked ecosystem.
Easy Deployment
Programmable I/O, an inbuilt real-time clock, and microSD logging mean fast commissioning in the field.
Reliable Operation
An ultra-low-power STM32L072 MCU and industrial-grade components are designed for years of continuous, unattended service.
Choose Your EC-M12 Configuration
Five I/O configurations, one NB-IoT / LTE-M / LoRaWAN cellular data logger platform.
Dual analog input configuration for 4-20mA industrial sensors such as pressure or level transmitters.
- 2x Analog Input 4-20mA
- 12V Sensor Power
RS-485 configuration for Modbus RTU sensors and third-party industrial instrumentation.
- 1x RS-485
- 12V Sensor Power
Dual digital input configuration for pulse counting, flow meters, and switch-based sensors.
- 2x Digital Input
- 12V Sensor Power
Mixed I/O configuration combining a digital input with dual analog inputs for flexible field wiring.
- 1x Digital Input
- 2x Analog Input 4-20mA / 0-10V
- 12V Sensor Power
Strain gauge configuration for load cells and precision force/weight measurement applications.
- 1x Strain Gauge Input
- 1x 5V Excitation Power
- 10V Excitation Power
Technical Specifications
Complete technical data for the EC-M12-BC-C6-C series.
| Category | Specification | Details |
|---|---|---|
| Microcontroller | STM32L072 | Ultra-low power MCU |
| Cellular Modem | SIM7070 | Multi-band 2G, Cat-M1, Cat-NB1 |
| Network Support | 2G / Cat-M / NB-IoT | Wide coverage, low-power IoT networks |
| Optional Connectivity | LoRaWAN | Long-range wireless option |
| Inputs | Vary by Model | Industrial sensor interface |
| Sensor Power Supply | 12V Excitation | Integrated sensor power output |
| Real-Time Clock | Inbuilt | Precision timekeeping |
| Storage | microSD Card (up to 256GB) | Expandable data storage |
| Battery Type | 2 × ER34615H (Li/SOCl2) | Non-rechargeable lithium batteries |
| Battery Capacity | 38,000 mAh | Combined dual-cell capacity |
| Enclosure Rating | IP67 | Weatherproof, dust and water resistant |
| Expected Service Life | 5+ years | Typical low-duty-cycle logging profiles |
Built for Long-Term, Unattended Field Monitoring
Multi-Year Runtime, Built In
Dual ER34615H Li/SOCl2 cells deliver a combined 38,000mAh capacity, giving the EC-M12 the runtime needed for multi-year unattended deployments without a site visit.
NB-IoT, LTE-M & Optional LoRaWAN
The onboard SIM7070 modem supports 2G, Cat-M1, and Cat-NB1 (NB-IoT), with optional LoRaWAN connectivity for sites where cellular coverage is limited.
Wired for the Sensors You Already Use
Model-specific I/O — 4-20mA analog, RS-485, digital, or strain gauge — connects directly to the sensors already deployed in your field infrastructure.
IP67, Field-Ready
An IP67-rated enclosure protects the electronics from dust, rain, and washdown in outdoor, agricultural, and industrial installations.
Sleep-First Architecture
Built around an ultra-low-power STM32L072 microcontroller, the logger is architected around sleep/wake cycles rather than continuous operation.
Timestamped, Backed-Up Readings
An inbuilt real-time clock timestamps every reading, and a microSD card slot (up to 256GB) provides local backup storage alongside cellular transmission.
No Manual Downloads Required
Deploy the EC-M12 in the field and pull readings remotely over the cellular or LoRaWAN network — no manual downloads required.
Your Platform, Not a Walled Garden
Firmware is built to connect to your own server or platform, so data flows straight into the systems you already run.
Connectivity Options
Only protocols confirmed for the EC-M12 platform are listed here.
Applications
Water Level Data Logger
Monitor water levels in agricultural fields and irrigation systems effortlessly. NORVI's battery-powered NB-IoT data logger provides real-time insights, helping farmers optimize water usage and reduce operational costs.
Read the case study →Agricultural Data Logging
Track soil, climate, and crop conditions with ease. Our NB-IoT data loggers deliver accurate, remote agricultural data to help farmers make informed decisions and improve yield efficiently.
Explore custom projects →Pressure Data Acquisition
Measure pressure in industrial pipelines, tanks, and systems without hassle. NORVI's solution enables continuous monitoring for safer and more efficient operations.
View Model A datasheet →Environmental Data Logger
Collect air, soil, and climate data in real time. NORVI's battery-powered NB-IoT data logger simplifies environmental monitoring, making sustainability and compliance easier for farms and industries.
Browse documentation →Engineered for Years, Not Months
A sleep-first cycle, powered by a 38,000mAh dual-cell pack, is what makes multi-year deployment possible.
The EC-M12 is built around an ultra-low-power STM32L072 microcontroller that spends most of its life in sleep mode. It wakes on a schedule, takes a sensor reading, stores it with a real-time-clock timestamp, transmits over NB-IoT, LTE-M, or LoRaWAN, and returns to sleep — a cycle powered by a 38,000mAh dual-cell Li/SOCl2 battery pack designed for 5+ years of service.
System Architecture
Documentation & Downloads
Application Notes
Firmware
Not yet published — coming soon.
Frequently Asked Questions
It's an industrial IP67 battery-powered programmable IoT data logger with NB-IoT, LTE-M, and optional LoRaWAN cellular connectivity, built for long-term remote monitoring.
It uses a SIM7070 modem supporting 2G, Cat-M1 (LTE-M), and Cat-NB1 (NB-IoT) networks.
Yes, LoRaWAN is available as an optional long-range wireless connectivity option alongside cellular.
The EC-M12 uses a 38,000mAh battery pack (2 × ER34615H Li/SOCl2 cells) engineered for 5+ years of service life under typical logging use.
No. The ER34615H Li/SOCl2 cells are non-rechargeable and designed to be replaced after their multi-year service life.
Inputs vary by model: dual 4-20mA analog (Model A), RS-485 (Model B), dual digital (Model C), mixed digital + analog 4-20mA/0-10V (Model D), or strain gauge with 5V/10V excitation (Model E).
Each model is built for a different sensor interface — Model A for 4-20mA analog sensors, Model B for RS-485/Modbus devices, Model C for digital/pulse inputs, Model D for mixed digital and analog wiring, and Model E for strain gauge/load cell sensors.
It has an IP67 enclosure rating, making it weatherproof and suitable for outdoor and industrial deployment.
An STM32L072 ultra-low power microcontroller.
Yes — Model B provides an RS-485 interface, and NORVI's application guides document Modbus RTU communication and transmitting Modbus data over MQTT.
Yes. The firmware is built to connect to your own server or platform rather than a locked third-party cloud.
Yes, MQTT is documented in NORVI's application guides for transmitting logger data, including RS-485 Modbus data over MQTT.
It includes a microSD card slot supporting cards up to 256GB for local, expandable data storage.
Yes, it has an inbuilt real-time clock for precision timestamping of logged data.
Common applications include water level monitoring, agricultural data logging, pressure data acquisition, and environmental monitoring.
Yes, white labelling is available, along with bulk order discounts for larger deployments.
Through the official NORVI store at shop.norvi.lk, or by requesting a quote directly from NORVI for bulk/OEM orders.
Match your sensor type to the model I/O (see the model comparison above), or contact NORVI's engineering team for a free consultation on your specific application.
Ready to Deploy Your Remote Monitoring Solution?
Talk to NORVI's engineering team about your application, or request a formal quote for your EC-M12 configuration.