A data logger can be powered by battery, so no continuous supply of mains power or external wiring is required to be able to monitor something remotely. One of them is the NORVI EC-M12-BC-C6-C-A that is a rugged device designed to operate in industrial settings and has NB-IoT, LTE-M, and 2G fallback connectivity.
It has a long battery life, an IP67-rated enclosure, and analog sensor interfaces, which make it perfect in outdoor and unattended use. This paper discusses its key characteristics, software support and buying specifications.
Norvi EC-M12-BC-C6-C-A Battery-Powered Data Logger Specifications:
- MCU: STMicroelectronics STM32L072CZT6TR (Cortex-M0+, 32 MHz, 192 KB Flash, 20 KB SRAM)
- Storage:
- microSD card slot (SPI interface)
- Supports up to 128 GB for local data logging
- Cellular Connectivity:
- LTE Cat-M1 / NB-IoT (NB1/NB2) / GSM (2G) fallback
- SIMCom A7672 and Quectel BC660K module options
- Data rates up to 588 kbps DL / 1119 kbps UL (Cat-M1)
- Analog Inputs:
- 2 x 4–20 mA current loop sensor inputs
- ADS1115 ADC with 16-bit resolution (I²C interface)
- 12 V sensor excitation output for powering field sensors
- RS-485 Interface:
- Half-duplex communication (SN65HVD72 transceiver)
- Programmable direction control pin (PB5)
- Misc:
- Real-Time Clock: DS3231 RTC with CR2032 backup battery (I²C 0x68)
- Indicators: Cellular connectivity LED indicator
- Power System:
- Dual ER34615H Li-SOCl₂ batteries (3.6 V / 19,000 mAh each)
- Combined 38,000 mAh capacity for multi-year operation
- Non-rechargeable, ultra-low-drain design
- Operating Range:
- –40 °C to +85 °C temperature rating
- Up to 2000 m altitude
- Dimensions: 146 x 89.99 x 50 mm
Norvi EC-M12-BC-C6-C-A Battery-Powered Data Logger Specifications
The logger works with the Arduino IDE, offering ready-to-use example sketches on GitHub for reading analog sensors and uploading data over cellular networks. Users can easily adjust logging intervals, sensor thresholds, and network behavior. Data can either be transmitted to cloud dashboards or saved locally on a microSD card, allowing flexible deployment in data acquisition, IoT monitoring, and remote sensing applications. More details available on the user guide page.
Internal Block diagram
The EC-M12-BC-C6-C-A NB-IoT/LTE-M industrial data logger is priced at $94 on the official NORVI shop. More details and specifications are available on the product page.
Niladri Chowdhury