Industrial Internet of Things, AI, Sensing, Telecommunication & Customised System Monitoring. EOFY Sale ON!

Cart 0

SenseCAP CO2, Temperature & Humidity Sensor Modbus RS485 & SDI-12

  • $299.00
  • Save $40
  • (Exc. GST)

  • Available in stock

  • $ We Ship from our stock in AU (Perth) with pickup option, and Prices are Exc. GST
  • $ We Offer Quantity Discounts for Large Orders 10+ qty (Request for Quote)
  • $ We Accept Purchase Orders & Net 30 Payment for Eligible Accounts

    SenseCAP CO2, Temperature & Humidity Sensor Modbus RS485 & SDI-12

    The CO2, temperature, and humidity sensor supports Modbus-RTU/ASCII RS485 and SDI-12 communication protocols, built-in calibration functionality, and is compact in size, making it widely applicable in greenhouses, cities, poultry farms, transportation stations, and other application scenarios where CO2 level is needed.


    • 3-in-1 sensor: Measure Carbon dioxide(CO2), air temperature, relative humidity
    • Wide Range & High Accuracy of CO2: 0ppm ~ 10,000 ppm, ± (40ppm+3%*MV)
    • High performance: high accuracy, fast response, and superior stability
    • Wide-range Power Supply and 2 protocols: 5V ~ 24V power supply, support RS485(Modbus -RTU / Modbus -ASCII) and SDI-12 protocols
    • User-friendly: factory-calibrated, supports custom calibration by pressing keys or using commands, easy to install and integrate

    This is a digital CO2 concentration sensor based on NDIR (nondispersive infrared), which can continuously collect and calculate the CO2 concentration in the air per unit volume and output in the form of a universal interface. It's designed to adopt PTFE film combined with a protective enclosure, improving its breathable performance. It is more accurate, stable, reliable, low-power consumption, and user-friendly. It compacts in size and can be easily integrated into various application scenarios.

    This digital NDIR CO2 concentration sensor supports RS485(Modbus -RTU / Modbus -ASCII) and SDI-12 communication protocols and is compatible with the wide power supply voltage of 5-24V. It has a built-in calibration functionality and can be widely applied in both indoor and outdoor environments. This product also adopts both single-air-chamber and double-channel. This CO2 Sensor (Version CO2-Connector) comes with a waterproof aviation connector, helping you save time and effort in wiring the sensor to a data logger with screws.

    Connect with 4G Sensor Hub or LoRaWAN Data Logger for Remote Transmission


    • Smart Agriculture
    • Smart Cities
    • Industry and Building ventilation systems
    • Airport, train station, shopping mall, home, office, classroom, and others
    • public places for air quality measurement and indication
    • Lab, warehouse, and other places to monitor the CO2 level


    Basic Parameters

    Product Model

    S-CO2-03A / S-CO2-03B

    Supply Voltage

    5 ~ 24 V

    Supporting Protocols

    Modbus -RTU RS485/ Modbus -ASCII RS485/ SDI-12 (v1.4)

    IP Rating

    IP65 (shading measures are required for outdoor installation, and the equipment cannot be exposed to direct sunlight and rainwater for a long time)

    Operating Temperature

    0°C ~ +50°C (Due to CO2 sensor limitations)

    Working Humidity

    0 ~ 95 %RH (no condensation)

    Cable Length

    2 meters

    Measurement Parameters




    Carbon Dioxide

    0 ~ 10000ppm



    Air Temperature




    Air Humidity




    Wiring Diagram and Calibration Button

    Sensor onboard a switch and a button:

    • Switch: select protocols(RS485/SDI-12), default is RS485.
    • Button: Pressing the button for 5 seconds can calibrate the sensor value to 400ppm.

    Part List



    Mounting Bracket


    Self-drilling Screw - 2cm


    Self-drilling Screw - 6mm





    We Also Recommend



    Sold Out