Is this really necessary?
Is the emonpi worked so hard that it gets anywhere near the limits of 80deg?
Especially as it’s not even a full OS version.
My Pi 3 running emoncms, node-red, 2 websites, media server plus lots more, fitted in a tight fitting pi case measures;
pi@raspberrypi:~ $ vcgencmd measure_temp
temp=52.6'C
How many Pi’s do we have running in hostile environments? In those isolated cases, it may be easier for users to run the command from within node-red with a trigger to a push/email/twitter node if temp > 75deg.
So I would question the value of running yet another script, other than being a novelty to emonpi.
Paul