Did you know that Comet exists in a US version as well?

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manufacturer of measuring instruments
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Wireless thermometer with built-in sensor, Sigfox IoT

The device measures the temperature from the built-in sensor with the possibility of installation directly into the measured space thanks to IP65 protection.

The measured values are sent in an adjustable time interval (10 min to 24 h) by radio transmission in the Sigfox network to the COMET Cloud, from which the user can view them using a personal computer or mobile device.

The instrument can monitor up to 2 alarm limits of the measured variable. Exceeding these limits is indicated by sending an emergency message. COMET Cloud transmits this alarm message via e-mail to the selected user. The device is suitable for applications that tolerate the delay of information delivered by Sigfox (max. 10 min).


  • wireless transmission of measured values and alarm states
  • battery power with low battery indication (battery life 4 months to 7 years)
  • external power with optional accessories
  • remote setting of the device from COMET Cloud (maximum once a day)
  • IP65
  • traceable calibration certificate in accordance with EN ISO / IEC 17025

The availability of Sigfox network in a particular location

Check your Sigfox network availability before you buy your device. COMET devices in the Sigfox network can be used anywhere in the RCZ1 zone. Learn more about Sigfox (RC) Radio Zones.


  • code
  • Warranty
    3 years

Technical data

Measured value



Measuring range -30 to +60 °C
Accuracy ±0.4 °C
Resolution 0.1 °C
Response time t90 of temperature measurement (temperature step 20°C, air flow approximately 1m/s) 10 minutes


Operating temperature -30 to +60 °C
Channels internal temperature sensor
Message transmission interval adjustable 10 minutes, 20 minutes, 30 minutes,1 hour, 3 hours, 6 hours, 12 hours, 24 hours
Alarm message sending interval 10 minutes
Operating frequency 868 MHz
Maximum transmission power 25mW
Sigfox radiation class 0U
Radio configuration zone RCZ1
Typical range of transmitter 50 km in the field, 3 km in the city
Power Lithium battery 3.6 V, AA size
Protection class IP65
Dimensions 126 x 89 x 40mm
Weight (including batteries) 150g
Warranty 3 years

Battery lifetime

Sending interval 10 minutes 20 minutes 30 minutes 1 hour 3 hours 6 hours 12 hours 24 hours
lithium battery A4203 - 2200mAh 4 months 7 months 11 months 1,5 years 3,5 years 5 years 6 years 7 years
battery holder (SP015) + 1x lithium battery A4206 - 8500mAh 1 year 2 years 3 years 5 years 10 years > 10 years > 10 years > 10 years
battery holder (SP015) + 2x lithium battery A4206 - 8500mAh 2 years 4 years 6 years 10 years > 10 years > 10 years > 10 years > 10 years

COMET Cloud & SigFox Technology

3 years warranty Traceable calibration certificate IoT Sensor - SIGFOX IoT Sensor - SIGFOX COMET Cloud Wireless Temperature sensor Humidity sensor Dew-point Barometric pressure Two-state inputs Alarm E-mail alarm Battery power IP protection

COMET Cloud - video

COMET Cloud - demo

Monitorinig during transport - video

Global Sigfox coverage - Sigfox Mapa