The DSE123 is a Load Share Lines Interface Device designed to expand existing analogue load share systems. The DSE123 monitors existing load share lines and converts the analogue information into a digital format. This process allows all existing control modules to communicate with the DSE5510 and DSE7510 control modules when they are added to the system.

When DC power is applied to the interface device a status LED will illuminate. If the DSE123 cannot communicate with the DSE5510 and DSE7510, the LED will flash to indicate a communication malfunction.