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SG111A CO2 Sensor

The SG111A is a new, low-cost NDIR (non-dispersive infrared) CO2 sensor with concentration ranges up to 5000ppm.  CO2 concentration is available by UART and PWM outputs.

View our Arduino hookup guide here:

Arduino test firmware is available now at:

You can purchase small quantities of the sensor from our shop:

You can also purchase USB Dev Kits featuring the Atmega 32u4 with Arduino Leonardo bootloader compatibility.



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