How to Assemble Sigrow Air Pro

Make sure you have all the necessary parts to assemble the Air Pro.

PCB

Battery

PCB plate

Filter and filter holder

Zip ties

CO2 Sensor

Case and hat

Place the filter with the pink side up into the hat.

Insert the filter holder in the hat. Start with one of the short sides, and align the pins on the filter holder with the holes in the hat.

Now push the filter holder in all the way.

Snap off the two thin strips of the PCB on each side

Ensure that the ports of the connectors are open before inserting the wires.

Open

Closed

Attach the wires of the CO2 sensor in the same way as in the photo.

Twist the CO2 sensor one time so the wires are not loose.

The blue and green wire should be on the outside of the PCB.

Use a zip tie to secure the CO2 sensor the the top of the PCB.

Place a small piece of plastic from a filter on the negative side of the battery holder.

The negative side is marked with (-) and is on the side towards the solar panels.

Insert the battery with the correct orientation into the battery holder.

Secure the battery with a zip tie.

The zip tie is inserted from the front, just below the "sigrow" text and goes around the battery and through the PCB again.

The zip tie is then sequred with another zip tie.

Cut off the remaining parts of the zip tie.

The PCB plate should be inserted into the case in the same orientation as the photo.

Hold the case such that the Sigrow logo is towards you.

The PCB plate should be inserted such that the rectangular hole is slightly to the left.

The smallest hole should be on the right side towards you.

The PCB plate should be pushed in all the way and pressed against the fins sticking out of the case.

Insert the PCB so that the CO2 sensor is on the side of the Sigrow logo.

The PCB should be pressed against the PCB plate.

The antenna should now stick out less than 5 mm.

Slide the hat over the case. The hat should fit well and not come lose if you shake the senor hard.