Environmental Sensor Filters

For a while I’ve been looking for air filters that we can use in sensors. The filters must have holes large enough to let air through, but not so big as to allow creepy-crawlies in. We’ve already had one sensor disabled by eggs laid by a tiny spider. For a while it looked as if water inlet filters for washing machines would do the job, but now I’ve found something even better.

These filters are actually for use by pipe smokers but I reckon that they will work a treat in our sensors too.