The module is connected to the automation system by means of a 4-core cable (shielded). 3 LEDs can be monitored through the transparent cover. They have the following functions:

• Green LED: "24Vdc": Power supply is connected
• Center red LED "DCF data": data transfer to the automation system
• Outer red LED "sec": second settings from atomic clock

The following data is provided:

• Minute – hour – calendar day – weekday – month – year
• Automatic daylight-saving adjustment