Analog Board ACR2000 External sensor board where the RS-232 communication port, the red and blue temperature probes and the air flow probe connections are located.
Robinair does not warrant any "RA" repair item not installed by an Authorized Service Center.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov