• Power Supply
    Battery operated with lifetime 5-10 years.
  • Memory storage
    DB Version: > 100.000 measured values (date- and ime-stamped)
    RTU and E-mail version: 90.000 measured values (date- and timestamped)
  • Transmit data via
    E-mail & RTU protocol to Scada &SQL database & SMS.
Request A Quote

Chatter® Battery Powered Data Logger With Modem

Chatter® is developed for monitoring and measuring of, among other things, level where no permanent power supply is available. Chatter® contains a built-in multi-channel data logger, a GSM/GPRS modem including a battery which ensures more than 5-year life time on the battery for one call a day. Chatter® transmits data over the internet to a Microsoft SQL data base by means of the integrated GPRS modem. Furthermore, it sends SMS text with alarm notifications. 


Advantages Using Chatter

  • Wireless data transmission to SQL database
  • Built-in GSM/GPRS modem with antenna
  • Long-life battery 5 - 10 years
  • Event-controlled data logger with memory for 30.000 logs
  • Anti-vandalism SMS alarm


Chatter® is housed in an impact-proof aluminium and plastic casing for mounting directly on bore holes and sounding borings where sensor, electronics and antenna are protected from vandalism. In this configuration log- and call intervals can be preset. Meanwhile the entire system is in hibernation mode, practically without using any electricity. At the chosen log- and transmission time the Chatter awakens, measures and transmits the data. Such a wake up can be as briefly as 10-15 seconds, with means the battery can last more than 5 years. Alternatively, Chatter® is available in an IP 67 / NEMA4 polycarbonate cabinet for wall mounting with a 230/115 V AC or 10-30 VDC supply. With Chatter®’s analogue, digital and modbus inputs, a connection of new as well as existing measuring units is possible. To save electricity, Chatter® only supplies the connected transmitters for the time the measuring takes place, typically less than 10 seconds per measurment. By choosing the Modbus connection, measurement signals are transferred to Chatter® with a maximum resolution, since there is no analogue-to-digital signal handling involved in the circuit.

  • Transmits data and alarms to standard SQL database using GSM/GPRS network.
  • Transmits data and alarms to SCADA systems using Modbus® RTU protocol over GSM/GPRS network.
  •  Data transmission by e-mail to up to four e-mail addresses:

                      •     Data directly in the mail body.

                      •     Data as attached CSV file in the mail.        

                      •     Data file can be displayed by Chatter Link PC software.

  • Transmits live data and alarms as SMS message to up to four recipients.
  • Alarms can be sent alone or along with other communication as SMS.

System Overview

Specifications Chatter™ Data Logger                            
Power supply  Built-in 3,6VDC,19 Ah lithium battery
Performance   Better than 5 years@1 measurement/day and 1 call/day
Clock  Real-time clock, 24-hour clock
Memory storage DB Version: > 100.000 measured values (date- and ime-stamped)
RTU and E-mail version: 90.000 measured values (date- and timestamped)
Log intervals  1, 2, 5 10 min, 1,  2, 4, 8, 12 or 24 hours
Call intervals 1, 2, 5 10 min, 1, 2, 4, 8, 12 or 24 hours
Communication  Build-in GSM/GPRS quad-band 850/900/1800/1900 MHz modem w/ on-board SIM- card holder
External Communication
MJK Proprietary protokol for DB Version,        
Modbus® RTU-mode, Modbus® TCP or COMLI® for RTU version
Interface 1 pcs. RS485 for Serial Data input
1 pcs. USB 1,1 type mini B, female
1 pcs. MMCX, female, for antenna
Antenna  Pipe: Built-in GSM/GPRS Antenna - Dual    band,    Amplification 0 dB,    Frequency    900/1800    MHz
Mounting  In Pipe with inner diameter Ø 63 - Ø106 mm or on a wall
Enclosure  IP 67
Materials Pipe: PC-ASA (top) and aluminium (base)
Wall: Glas-reinforced PC (polycarbonate)
Temperature range  - 20 … 60 °C
Air humidity  Max. 95%  relative
Weight Pipe mounting: 1,8 kg    
Wall mounting: 0,7 kg
CE approvals  EN61000-6-1:2007, EN61000-6-3:2007
Input and Output 4AI/4DI/1RS485
Digital inputs  4 pcs. 2 - 5 VDC (min. time for state 1 second)
Analog inputs  4 pcs. 0 -  2,5 VDC
Serial Data input     1 pcs. RS-485 Modbus® com port for max. 4 units Modbus® RTU-mode, 9600 baud, 2-wire RS-485,    
Master mode, Function 3, Read only
Power supply fo I/O     1 pcs. 3,6 VDC
1 pcs. 3,6 VDC ON/OFF-controlled
1  pcs. 5  VDC ON/OFF-controlled, option +10 or +15 VDC.
Accuracy  AI: Better than ± 1% FS
Resolution  AI: 10 bit, input impedance: min. 10 K ohm
  • Measuring levels, pressure,    temparature, flow  and more paramateres in wells, boreholes, sewers and rivers or lakes.
  • Ground water level monitoring. Chatter™ Data Logger is especially useful in places without main power supply, as it is developed for having a very long lifespan on the built-in battery.
  •  Storm flow logging, activated by level-trigger or analog limit. Logging of amount, durance and time of storm flows.