The device is a 8-hour hour counter with a range of up to 999,999 hours and 59 minutes (resolution 1 minute). Timing is read when input ‘INPUT 1’ is triggered. Indication of this is a flashing 1 Hz LED.
The setup menu is available only when the input ‘INPUT 2’ is activated and the password is entered correctly. It allows you to set the start time, access password control, and input type setting. The settings and countdown hours are stored in power-independent memory.