Buzzer or Tower Light Using MODBUS

> Is there any buzzer or tower light that support MODBUS?

My company is in the middle of designing a modular stack light. It'll have 10/100bT connection to Modbus/TCP. Doesn't do you much good now since it's not done... but I am curious what's on your "wish list" for machine indicators? Modbus seems kinda obvious to us & I wish we'd have started it sooner.

Some inexpensive programmable relays support Modbus. DGH Corp makes Modbus IO pretty reasonably too. Both could put a Stack Light on a Modbus network.
 
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