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Quantity
1
All Plantower laser counters are pretested in PurpleAir facilities.
Replacement laser counters are intended for when a sensor’s previous laser counters fail and cannot be repaired. Make sure to select the appropriate laser counters for your...
Reviews
4.5
105 ratings
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I ordered the wrong laser counter. Purple Air quickly sent me an RMA postage paid.
I reordered the correct laser counter.9
Duane · February 16, 2026
Worked great.
The online video showing how to replace the sensors is very well done. I was able to follow it and get the new pair installed in my classic version of the sensor with no problems. Great service. Great price on these sensors. Thanks!
B
Brian · December 4, 2025
Replace the counters
It’s quite a job changing the lazer counters. Just take your time and be careful.
