SAE J1939 CAN and NMEA2000 tell-tale product provides 4 LED illuminated operator alert tell-tales and one programmable switched output. The large, front-facing operator button provides manual access to the switched output, giving the operator control over a connected CAN controlled device. Additionally, the switched output can be automatically triggered by any CAN message (DM1 or other) detected by the indicator. The alert panel directly reads and processes compliant CAN messages.