Buzzer and Digital Clock In-A-Box - Ring up to 72 events across a 7 day week. That's enough for 3 shifts, 24/7/365. 
Example, having the buzzer go off at 7AM, 7 days a week, is one event.  Not seven.

Each basic kit includes:

• One Made-In-USA Pyramid 7000 master clock timer, with variable bell durations
• One 24VDC to 120VAC relay, pre-wired and installed for you, inside the 7000
• You can set it up with three buttons.
• One  Edwards 120VAC 102dB adjustable industrial grade steel case work shift horns.
  ----  add up to 9 more on this circuit
• 50' of twin stranded speaker cable to connect the bells (go out to 500' if you like!)
• Mounting hardware for the 7000 master clock 
• One 4" tall super-bright red on high contrast black background 4 digit digital display
  ---- add up to 9 more on this circuit. Each digital clock needs a 120V plug near it.
• 90 days of factory technical support, one year product replacement warranty. 
  Call Pyramid, or call US.
• Add more buzzers and more clocks as needed. 

Easy set-up.  The clock automatically synchronizes with the 7000 master clock.

This is how you set-up the buzzer times:

Simple 3 button setup. 

Just press three buttons to program it, and have your schedule written out in front of you.
Button one: Enter and Save  
Button two:   Up (numbers and settings)  
Button three:  Down (and settings)

Example:  Monday through Friday, 1/2 day on Saturday, closed on Sunday:
There is no software, but this iilustrates it.