In the event of an error, the relay for the acoustic signal and the relay for the visual signal are both activated The user can acknowledge the alarm on the device to silence the acoustic alarm The visual alarm will not go out until the error is rectified Collective alarm systems for monitoring machines, industrial plant and buildings Expandable from 4 to 160 alarm inputs Operating current/rest current principle adjustable for the 4 inputs Input response delay 35 mm overall width
