DescriptionCranford offer a 2 Amp and 4 Amp power supply unit to assist with the installation of 24VDC door retainers.The units contain an internal relay allowing fire doors to be closed upon actuation of an external contact or supply of 24VDC.FeaturesPowers a range of 24VDC door retainers and field devices from 230VAC supplyAutomatic cut off when no power is supplied, fail-safe design results in fire door closingGreen LED indicating mains voltage presentAmber LED indicating fault condition
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