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SC75 Wireless CO2 Sensor


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Price: $379.00
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The SC75 CO2 Sensor can measure indoor CO2 concentrations in order to determine indoor air quality (IAQ). The SC75 offers a dual-mode power option, allowing the sensor to use an AC wall adapter for best performance, or up to 4 months operation using the built-in battery at a slower sample rate. By placing SC75 sensors in building spaces, ASHRAE IAQ performance can be easily monitored and verified.

User manual

What's included

  • SC75 CO2 Sensor
  • 1/2AA lithium battery (installed)
  • A/C wall transformer


  • Measures 0-5000 ppm ambient CO2 levels
  • Dual power options: either AC wall powered, or battery powered
  • With AC wall power, provides down to 5 second sample rate
  • With battery power, provides down to a 2 minute sample rate
  • Low power design - Battery powered sensor provides installation location flexibility
  • Battery life expectancy – 4 months operating on only battery power
  • Compact size convenient for easy installation
  • Industry leading data storage – up to 120 Billion points
  • Powerful DataRecorder software included to chart, log, monitor all individual sensors
  • HaloCloud service for access to remote sensor data and configuration from anywhere including from Tablets, Smart Phones, Remote PCs
  • Programmable individual sensor alarm set points and alarm notification via email or Text message with HaloCloud service
  • Complete setup requires one System Gateway (GWx series). Add sensors as needed with scalable system and gateways capable of handling hundreds of sensors at a single location
  • Compliant to RoHS Directive 2002/95/EC

Application Examples

  • Energy Management, Auditing, Monitoring, Analytics
  • HVAC Systems
  • Building Air Quality
  • Environmental Data Acquisition and Studies
  • Medical /Pharmaceutical
  • Hospitals
  • Employee Safety
  • Greenhouses and Plant Growth Solutions
  • R&D

External CO2 sensor/ probe options

MeasurementRangeExternal sensor
Carbon Dioxide probe0-2000 ppmCDP-1


Model NumberSC75
Measurement ChannelsCO2
SensorInternal 0-5000ppm CO2 NDIR sensor
Measurement Range0-5000ppm
Unitsppm, %
Sample Rate10 Hz to 32 Hrs
Sensor Response Time (90%)Approx. 3 min
Calibrated Accuracy+/-20 ppm
Digital I/O ChannelsN/A
Temporary Sensor Memory1000 data points
Long -term Memory (using Gateway):Up to 120 billion data points
LED IndicatorGreen, power and programming indicator
Required Interface PackageGateway (GWx series)
Wireless Data SecurityAES-256 Encryption
Radio Power250mW
RF Carrier Frequency902-928 MHz
RF Transmit Data RateAuto-adjusting 32-196kbps
Hopping Channels25
Transmit Power+20dBm
Receiver Sensitivity-110dBm typical
Range (Line of sight)Up to 1000’
Range (Typical indoors)Up to 150'
Power RequirementsA/C power or battery (std 1/2AA lithium)
Typical Battery Life3 months without A/C power (10 years with A/C power)
Enclosure MaterialRuggedized polycarbonate plastic
Upgradable FirmwareYes
Operating Environment-40~+85°C (-40~+185°F); 0~95%RH non-condensing using lithium batteries
Dimensions70x45x22 (mm) (2.76" x 1.77" x 1.73")
Weight6oz. with batteries
ApprovalsUS(FCC), CA(IC)
WarrantyOne (1) year parts and service