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Comet Remote CO2 concentration with Ethernet interface and two relays


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Comet Remote CO2 concentration with Ethernet interface and two relays

CO2 level transmitter with two output relays.

The CO2 measurement is based on a 2-source, 2-beam process. CO2 measurement with long-term stability is guaranteed thanks to the proven non-dispersive infrared (NDIR) CO2 measurement cell. The unique patented auto-calibration procedure compensates for aging of the infrared source and guarantees high reliability, long term stability and eliminates the need of periodical recalibration in the field.

The device is supplied with CO2 probe with 1m cable. Cable lengths 2 or 4 meters available optionally.

The CO2 concentration is shown on the display or signaled by a color LED.



  • CO2


    • Measuring range 0 to 10 000 ppm
    • Accuracy ±(110ppm +5% from reading) at 25°C and 1013hPa
    • Resolution 1 ppm


    • Quantity 2
    • Maximal voltage 50 V
    • Maximal current 2 A
    • Maximal power 60 VA


        • Operating temperature -30 to +60 °C
        • Channels 1x external CO2 sensor
        • Acoustic alarm from built-in beeper - switchable
        • Output Ethernet
        • Measuring interval 15 s
        • Communication protocol WWW, ModbusTCP, SNMPv1, SOAP, XML
        • Alarm protocols E-mail (SMTP authentication is supported), SNMP Trap, Syslog
        • Power 9-30 Vdc
        • Protection class IP30 electronics; IP65 sensors
        • Dimensions 136 x 150 x 45 mm
        • External probe cable length CO2 1 meter (optionally 2 or 4 meters)
        • Weight approx. 360 g
        • Warranty 3 years


        * the features may vary depending on the device type

        • accurate measurement of Temperature, Relative humidity, Dew point, Atmospheric pressure, CO2, Two-state events
        • communication protocols SNMP, Modbus TCP, SOAP, XML
        • webserver to display current and recorded values
        • alarm indication via email
        • selected models with PoE
        • data analysis in COMET Database software


        Comet Database One Click Installer (20.1-II)

        Database Viewer dbapi 20.1

        TSensor (3-4-1-0)

        Sensor Reader (2-0-6-0)

        Conversions - application for recalculation of values


        Terms and Conditions COMET System s.r.o.


        Quick Start Manual

        Declaration of Conformity

        COMET Cloud security

        How to add WebSensor to COMET Cloud



        CATALOG - CO2

        CATALOG - WebSensors with Ethernet output and relay Catalog

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