The RTC Module permits time and date information with a battery backed up Real-Time-Clock (RTC). It has one universal signal input and SAE J1939 CAN bus ports. The universal input can interface with a command signal (0-5V; 0-10V; 4-20 mA; Frequency or PWM) or it can serve as “clock synchronization” trigger. For example, the RTC date and time could only be set when the input is triggered. The battery backup permits 15 years of operation. Power is 12V, 24V or 48Vdc nominal. The controller is ruggedly packaged for harsh operating environments.