Synchronized work shift timer/master clock with low voltage manufacturing horn
Easy Set-up, easy to expand, extremely reliable System.

Pyramid 7000 master clock with power supply and printed owners manual
Loud 98dB Industrial Buzzer, it gets the job done.  Add more if needed.
10' stranded wired to connect horn to master clock, expand to 300'
The horn is powered by and synchronized to the Pyramid 7000 master clock
Ring 5 to 50 buzzers on this system.  Additional power may be required PTR5300 power supply), each installation is unique after 5 buzzers.

200 Scheduled events, each with a variable duration .5 to 15 seconds, shared across 7 days
A typical 3 shift (24/7) operation uses only 21 rings (events) a day, so this has plenty of room for whatever you can think up.
Add more buzzers, add digital or dial face synchronized clocks, up to 300' out.

One Year USA manufacturer's replacement guarantee

Synchronized Event Scheduling Program

Ring up to 200 times a day, across 7 days
Maximum distance (can be exceeded with PTR5300 power booster):
300' using 18AWG stranded wire
Each event can ring for different durations, example: 1 second for "two minute warning", 3 seconds to head back to work.
Add more buzzers as needed
Example Schedule:

Available Upgrades:

Synchronized Digital Clocks - Large 4 digits visible at up to 250', and 6 digits - with seconds
Analog wall clocks, 13" around, with black trim rings
110V is required at each clock location, synchronized time signal travels through BCD cable, from clock to clock. 1-2-3-4-5 and so-on.  Mix and Match as desired.
Maximum 200 digital clocks, 8 dial face analog clocks (more with power booster PTR5300)