Comet GSM Datalogger

IoT Wireless Four channel Datalogger with pulse and two-state inputs, with built-in 4G modem


  • Parameters of the voltage contact „L“ level input voltage:< 0,4 V(*);„H“ level input voltage:> 2 V;
  • Minimum voltage applicable:0 V;
  • Maximum voltage applicable:+30 V DC
  • Parameters of the voltage-free contact Contact resistance in „switched-on“ state:< 10 kOhm;
  • Contact resistance in the „switched-off“ state:> 300 kOhm;
  • Contact voltage in the „switched-off“ state:ca 3 V;
  • Minimum state duration necessary for latching the state:1s


  • Operating temperature -20 to +60 °C
  • Channels 4x binary input nebo 2x binary input a 2x counter
  • Memory 500,000 values in noncyclic logging mode; 350,000 values in cyclic record mode
  • Recording interval to the internal memory adjustable from 1 second to 24 hours
  • Recording interval to the COMET Cloud from 5 minutes
  • Interval for measuring and evaluating alarms adjustable 1 s, 10 s, 1 min
  • Recording mode noncyclic – data logging stops after filling the memory
    cyclic – after filling memory oldest data is overwritten by new
  • Real time clock year, leap year, month, day, hour, minute, second
  • Power rechargeable Li-Ion battery A8200, 3.6V/5200mAh
  • Protection class IP20
  • Dimensions 61 x 93 x 53 mm, with antenna 120 x 93 x 53 mm
  • Weight (including batteries)  270 g
  • Warranty 3 years

In Stock

GSM datalogger can be configured to record from four binary inputs, or from two pulse and two binary inputs. If the input values exceed set limits, the device sends an SMS message or a JSON message via a 4G data connection. Values can also be sent to COMET Cloud, which is a complete monitoring, alarm, and analysis system. The regular sending of JSON messages to COMET Database can be adjusted; alarms are indicated locally by LED, LCD, and acoustic beeper. Recording is performed in a non-volatile electronic memory; data can be transferred to your PC via included USB-C cable.


Comet GSM datalogger  Datasheet