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Adding CO2 To MSR-1

1. Unplug your MSR-1 from power and remove the back

MSR-1 in its open case next to the removed back cover

2. Remove the board from the case and orientate it like the below image. In the bottom right there is a black connector. There is an x in the lower right corner of the connector

MSR-1 board out of the case with the CN3 CO2 connector and its x marking at lower right

3. Orientate the CO2 module so the white x on the module is also in the lower right and the gold dot is in the upper left as seen below

CO2 module oriented with its white x at lower right and gold dot at upper left

4. Align the connector on the back of the CO2 module with the connector on the MSR-1. Once aligned, push down so the CO2 module fully seats itself

CO2 module fully seated on the MSR-1 board in the lower right corner

5. Put your MSR-1 back in the case and slide the back cover on. Please refer to our CO2 calibration guide to calibrate the CO2 module.