The reset dip-switch 1 no longer resets the factory calibration disk values.
A customisable message output format (message 12) and associated MSGSET and MSGGET commands have been added.
The custom message now allows serial number, accumulation (in mm over one hour) and NWS weather codes to be output.
The thresholds for dirty lens trigger levels for system status and system alarms have been changed. There are now 2 levels of dirty window reported, >10% and >20%, to allow users to set separate warning and alarm messages or display. Programs written around existing thresholds will still give a correct response without false alarms or missed alarms.
Present weather algorithm changes - The CS125 can now output NWS weather codes as part of a custom message.
Present weather algorithm changes - A modification to the OS to prevent misreporting of rain as snow has been made.