Spec Sheet Preview: The Alpha Communications® RY024AM specialty relay modules are used for a variety of reasons. They are primarily used with room calling stations on the AlphaEcall™ 200 series emergency-call systems. It can also be used to provide a 'Form C' relay contact from virtually any 24VDC input source. The RY024AM can even be powered directly from a 24VDC power supply. As long as a 24VDC source is present, the RY024AM will engage, providing a normally-open and a normally closed set of contacts, with a shared 'common' screw termina …