Loud Low Voltage Buzzer 24V AC

4" 102dB at 10' 120V AC
UL and CL rated
Volume is adjustable, adjusting tool - an allen wrench - is included
Solid steel case, zinc coated internal parts

Edwards 24VAC low voltage 102dB vibrating buzzer

Applications:  Manufacturing, schools, warehouses

Low voltage for ISO9001 and other cautious installations

UPC 782979205203

Buzzer only, does not come with mounting bracket

4" 24V AC Buzzer 102db| Florida Time Clock - It's a very LOUD industrial grade shop buzzer. 24VAC is low voltage. Draws 0.7amps. Requires minimum 110/24VAC 2AMP power supply.

Why choose low voltage over high voltage?

In some states if you run high voltage wire (like 110V), fire code requires it to be inside conduit, or run Romex.
You can spend far more on conduit, and the cost of installing it, than simply ordering a power supply and low voltage buzzers.

If you want a low voltage bell system, this one does the job.  However, it does not print on time cards or track employee time:
  (click on this line)