Horns are audible alarms activated by the output from a relay, programmable controller (PLC), or process control system.
- To alarm when a part or container is not in the correct position.
- To alert of a deviation in a process parameter from its set point.
- To warn that equipment has shut down.
- To alert when a process set point has been reached.
- Can be programmable so different alarm sequences give different warnings.
- Can be located remotely from the process.