Spec Sheet Preview: The PK601A is a 24VDC power supply used to power auxiliary signaling devices, typically used in Alpha Communications® emergency-call or other systems. The unit provides a filtered 24 volt DC output rated at 1 amp. Although specifically designed for use with emergency-call systems, the PK601A may also be used as a DC silent door opener adapter in Alpha Communications® apartment entrance systems, as well as a DC power source for other systems. The PK601A is powered by our mod …