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.
Features
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3-in-1 sensor: Measure Carbon dioxide(CO2), air temperature, relative humidity
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Wide Range & High Accuracy of CO2: 0ppm ~ 10,000 ppm, ± (40ppm+3%*MV)
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High performance: high accuracy, fast response, and superior stability
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Wide-range Power Supply and 2 protocols: 5V ~ 24V power supply, support RS485(Modbus -RTU / Modbus -ASCII) and SDI-12 protocols
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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
Applications
- 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
Specifications
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Basic Parameters
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Product Model
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S-CO2-03A / S-CO2-03B
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Supply Voltage
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5 ~ 24 V
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Supporting Protocols
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Modbus -RTU RS485/ Modbus -ASCII RS485/ SDI-12 (v1.4)
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IP Rating
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IP65 (shading measures are required for outdoor installation, and the equipment cannot be exposed to direct sunlight and rainwater for a long time)
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Operating Temperature
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0°C ~ +50°C (Due to CO2 sensor limitations)
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Working Humidity
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0 ~ 95 %RH (no condensation)
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Cable Length
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2 meters
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Measurement Parameters
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Range
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Accuracy
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Resolution
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Carbon Dioxide
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0 ~ 10000ppm
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±(50ppm+3%*MV）
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1ppm
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Air Temperature
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-40~85°C
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±0.2℃
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0.01°C
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Air Humidity
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0~100%RH
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±1.8%RH
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0.01%RH
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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
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Sensor
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x1
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Mounting Bracket
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x1
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Self-drilling Screw - 2cm
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x4
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Self-drilling Screw - 6mm
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x3
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