I want to source a small box with
O CE marking
O Tolerance to humidity as found in a sheltered outdoor enclosure.
O A PM2.5 sensor
O An NO2 sensor
O A fan obviously.
O Any I can get of:
I want it to work outside in the UK - so very occasional -20C and +40C - normally -5 to 35.
I don’t need fancy accuracy - 10% sounds fine, maybe more if it’s all I can get.
I don’t want to have to externally calibrate it, or service it at less than 5 year intervals, if at all.
I have a Pi to talk to it with. Modbus would be lovely, but we can hack any protocol we need to
Any suggestions how I source such a thing?