The WR-2-2440-4H is a complete network addressable timer system. It includes everything needed to automate your factory bells. Simply connect the Wr2-2440-ML to your network with a Cat5 cable connection and program and control your bells  over the simple web page interface.
Program up to 50 daily or weekly ring times.
Select the days you wish to activate bells
for instance Mon to Fri weekends off
each event can have its own unique duration so it is possible to have shorter ring bells and longer ring bells to signify warning and regualr events.

This is the easiest to use web interface and no comptuer experience required.