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Products / Types of sensors

  • RH Sensors

    RH sensors measure relative humidity.

  • Temperature Sensors

    Sensors for measuring temperature.

  • Wireless Sensors

    Wireless battery sensors

  • Humidity + Temperature

    Humidity + temperature sensors

  • Duct Sensors

    Duct sensors optimize ventilation.

  • Industrial Sensors

    Industrial sensors ensure reliability.

  • VOC + humidity

    VOC + humidity sensors

  • CO2 + temperature

    CO2 + temperature sensors

  • CO₂ + VOC

    CO2+VOC sensors

  • Accessories

    Accessories facilitate the installation of sensors.

  • Refrigerant Leak Sensors

    Sensors for detecting refrigerant leaks.

  • Radon Sensors

    Radon sensors for direct ventilation control.

  • PMx Sensors

    PMX sensors monitor dust particles.

  • CO2 sensors

    CO2 sensors for air quality monitoring.

  • CO2 + humidity

    CO2 + humidity sensors

  • VOC Sensors

    VOC sensors detect harmful substances.

Latest news
    The Impact of VOCs on Health and Productivity in the Workplace
HomeProduktyCO2 sensors

CO2 sensors

Choose a sensor that is suitable for your project. Our sensors are compatible with 99% of ventilation units and are designed to reliably function for over 10 years. Throughout their operational life, they also require no maintenance or calibration. All CO2 concentration sensors operate on a advanced optical NDIR principle. More about the NDIR principle can be found here.

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Additional features
  • https://cidladev.mh370.cz/wp-content/uploads/2026/03/FL-low-cost.png
    NEW

    https://cidladev.mh370.cz/wp-content/uploads/2026/03/FL-low-cost.png

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room
    • BOOST mode for one-time ventilation
    • Three-Stage LED Indication
    • Night Mode – automatic LED turn-off at night
    • NDIR Principle
    Request a price
  • https://cidladev.mh370.cz/wp-content/uploads/2026/03/FL.png
    NEW

    https://cidladev.mh370.cz/wp-content/uploads/2026/03/FL.png

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room
    • BOOST mode for one-time ventilation
    • Three-Stage LED Indication
    • Night Mode – automatic LED dimming at night
    • NDIR Principle
    Request a price
  • NL-ECO-CO₂-CBK
    BLACK version of the sensor NL-ECO-CO2

    NL-ECO-CO₂-CBK

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , hallway
    • Three-Stage LED Indication
    • Night Mode – automatic LED turn-off at night
    • NDIR Principle
    Request a price
  • NLII-CO₂-R
    relay

    NLII-CO₂-R

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , restaurant , fitness centers , commercial buildings
    • households , bedroom , living room , children's room , kitchen , corridor , hallway
    • Three-Stage LED Indication
    • NDIR Principle
    Request a price
  • NL-ECO-CO₂-D
    Into the ductwork, new series

    NL-ECO-CO₂-D

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , restaurant , fitness centers , commercial buildings
    • households
    • Three-Stage LED Indication
    • NDIR Principle
    Request a price
  • NL-ECO-CO₂
    Best-selling product

    NL-ECO-CO₂

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , hallway
    • Three-Stage LED Indication
    • Night Mode – automatic LED turn-off at night
    • NDIR Principle
    Request a price
  • NL-ECO-CO₂-BA
    Button for Burst Ventilation

    NL-ECO-CO₂-BA

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , corridor , hallway
    • BOOST mode for one-time ventilation
    • Three-Stage LED Indication
    • Night mode – automatic LED dimming at night
    • NDIR Principle
    • Sound ALARM
    Request a price
  • NL-ECO-CO₂-230
    230 V AC Power Supply

    NL-ECO-CO₂-230

    230 V AC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , hallway , hallway
    • Three-Stage LED Indication
    • Night Mode – automatic LED turn-off at night
    • NDIR Principle
    Request a price
  • ADS-CO2-D
    Into the ductwork

    ADS-CO2-D

    24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , corridor , entrance hall
    • NDIR Principle
    Request a price
  • NLII-CO₂
    Current and Voltage Output

    NLII-CO₂

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , hallway , entrance hall
    • Three-Stage LED Indication
    • NDIR Principle
    Request a price
  • NLII-CO₂-R-5-A
    SCHOOL CO₂ SENSOR

    NLII-CO₂-R-5-A

    12 – 24 V AC / DC
    • schools , commercial buildings
    • living room , corridor , entrance hall
    • Three-Stage LED Indication
    • NDIR Principle
    • Sound ALARM
    Request a price
  • Our smallest sensor CLII-CO₂
    Into the building - covering with its own cap

    Our smallest sensor CLII-CO₂

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , entrance hall
    • NDIR Principle
    Request a price
  • CO₂ Sensor (CL‑CO₂)
    In the installation - covering with its own cap

    CO₂ Sensor (CL‑CO₂)

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , hallway
    • NDIR Principle
    Request a price
  • ADS-CO2-24
    Rotary knob, relay, 24 V AC power

    ADS-CO2-24

    24 V AC / DC
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , hallway , hallway
    • NDIR Principle
    Request a price
  • ADS-CO2-230
    230 V AC Power Supply

    ADS-CO2-230

    230 V AC
    • offices , schools , classrooms , fitness centers , commercial buildings
    • households , bedroom , living room , hallway , hallway
    • NDIR Principle
    Request a price
  • IL-CO2-R-5-R1
    IP65 rating, optional range, relay

    IL-CO2-R-5-R1

    12 – 24 V AC / DC
    • shopping centers , restaurant , fitness centers , commercial buildings
    • Three-Stage LED Indication
    • NDIR Principle
    • Durable design Ipxx
    Request a price
  • NLB-CO2-5-MRF
    Battery-operated, optional measurement range, wireless communication.

    NLB-CO2-5-MRF

    Battery
    • offices , schools , classrooms , shopping centers , commercial buildings
    • households , bedroom , living room , children's room , corridor , hallway
    • NDIR Principle
    • Wireless Communication
    Request a price
  • NLII-CO₂-5-RS485
    Optional Measurement Range, MODBUS/RS485

    NLII-CO₂-5-RS485

    12 – 24 V AC / DC
    • offices , schools , classrooms , shopping centers , restaurant , fitness centers , commercial buildings
    • households , bedroom , living room , corridor , hallway
    • Three-Stage LED Indication
    • NDIR Principle
    Request a price
Contact us

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      obchod@protronix.cz

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