LP8 Miniature CO2 Sensor

LP8 Miniature CO2 Sensor
LP8 Miniature CO2 Sensor
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For large quantities, please contact Sales@CO2Meter.com

Browse more CO2 Sensor or additional Senseair products.


• Small footprint NDIR Sensor 
• Designed for long-term battery operation
• Variable measurement period to save energy

The LP8 miniature CO2 sensor is one of the smallest, lowest-power, non-dispersive infrared (NDIR) sensor on the market today. It was designed from the ground up for long-term battery or solar-powered applications. It gives full control for integration into a host system, and a flexible CO2 measurement period to minimize power consumption in the field. One measurement requires only 3.6 mC of charge (or energy 11.9 mJ having 3.3V on the battery).

A wide supply voltage range (2.9-5.5V) enables a variety of battery options for powering the sensor. For example it can be powered by 3 alkaline 1.5V batteries, or a single 3.6V Li-SOCl2 battery for a more compact alternative.

The LP8 provides a relatively simple communication protocol which lets you change the measurement period, compensate for barometric pressure, and control calibration in real time. Background (ABC) and zero-gas calibrations methods are both implemented in a simple manner.


  • CO2 Measurement: non-dispersive infrared (NDIR)
  • Measurement Range: 0-10,000ppm CO2
  • Accuracy: ± 50ppm, ± 3% of reading
  • Measurement Period: >15 seconds
  • Communication: UART (host-slave protocol)
  • Sensor Life Expectancy: > 15 years
  • Maintenance Interval: no maintenance required
  • Self-Diagnostics: complete function check on startup

Electrical / Mechanical

  • Dimensions: 32.7 × 19.7 × 8 mm (LxWxH)  < 8 grams.
  • Power Input: 2.9-5.5 VDC
  • Charge per measurement: 3.6mC
  • Energy per measurement: 11.9mJ @ 3.3V


  • 90 days

CO2 Sensor Documention LP8 Sensor Datasheet (pdf)

CO2 Sensor Documention LP8 Sensor Manual (pdf)

CO2 Sensor Documention AN-162 LP8 to Arduino via UART (pdf)