AirGradient Forum

Open Air assembly - 2 included plasitc washers?

Hi, included in the Open Air self-assembly kit are two plastic washers. The assembly instructions do not refer to these. How shall they be installed? I’m assuming they are for the screws which attach the S8 sensor module since that is the only part that came with two screws. Assuming this is correct, do the washers go between the screw head and the PCB, or between the PCB and the base plate?

Thank you in advance!