Since yesterday, I have been running a Smallrig cooler plonked on top of my UKRAA PicoMuon detector. I am impressed. Whole casing is kept cool, runs very quietly, whole device is small and neat, a perfect compliment to the PicoMuon. Hopefully, it will stop the PicoMuon from registering spurious dips in muon counts when the ambient temperature is high as it has done in last few months.