The FL301 – Multifunction Alarm is designed to give an alarm output when the reading on a particular gauge passes a predetermined level. The unit may be set to switch on either a falling or rising level for any type of gauge as long as the sensing unit is a variable resistance and the sender output is a variable voltage. A twenty five turn pot is fitted, allowing fine adjustment across the full scale for most known gauges. Alarm output is via volt free relay contacts. Contact rating is 30VDC, 1.0 Amp resistive.