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</script>https://www.alicat.com/wp-content/uploads/2026/01/featured-alicat.png1200630Alicat flow and pressure devices have an optional alarm functionality that helps simplify control systems such as PLCs or manned stations. An alarm is transmitted as an analog signal though the communications connector on the device. The following article gives a brief introduction to the ALE serial command and provides a breakdown of the command structure for setting an alarm.