An alarm condition causes a light and siren to come on which remain on until the machinery is secured.

An alarm condition causes a flashing light to illuminate indicating the malfunction, followed by an audible alarm. When the alarm acknowledge button is depressed, the audible alarm is silenced and light stops flashing but remains illuminated.

An alarm condition gives an audible and visual alarm signal, both of which are secured when the alarm acknowledge button is depressed.

An alarm condition causes a flashing light to come on, followed by an audible alarm. When the alarm acknowledge button is depressed, the warning light is extinguished.