8-digit GM Part Number: Display indicates the part number of the module

Accessory 1: Display indicates the current status of Accessory 1

Battery Voltage: Display indicates the voltage input, 0-30 volts is the operating range

Calibration ID: Display indicates the 4-digit calibration ID of the module

RAP Output: Display indicates the current status of the RAP System

PROM ID: Display indicates the 4-digit PROM ID of the module