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 two two-state inputs, Sigfox IoT

The device measures the temperature from the built-in sensor and evaluates two binary inputs for event monitoring (open / closed / off, etc.).It features a simple, compact designwith 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

Two-state signal


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


Parameters of the voltage contact Input voltage level „L“:< 1.5 V;
Input voltage level „H“:> 4 V;
Minimum input voltage: 0 V;
Maximum input voltage:+30 V DC
Parameters of the voltage-free contact Contact resistance for


Operating temperature -30 to +60 °C
Channels internal temperature sensor, binary input
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 (operation is possible in Europe, Iran, Oman and South Africa)
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

Monitorinig during transport - video