node-red function to convert K to C
msg.payload=((msg.payload - 273.15).toFixed(1));
return msg;
if you run the Newest Version of SignalK you can convert the values in openplotter:3000
msg.payload=((msg.payload - 273.15).toFixed(1));
return msg;
if you run the Newest Version of SignalK you can convert the values in openplotter:3000