I purchased 3 Airgradient 9.0’s and they are all reading 0 for PM2.5 and won’t increase no matter what I do.
Batch number is 20240826.
Could I get some help?
Thank you!
Hi @lluke , welcome to the forum!
Am I right to assume these are kits? Have you already applied the PMS5003T_20240826 correction formula in the dashboard for those devices?