Details: Alpha Communication AC153 3rd Priority Annunciator Control Unit

The Alpha Communications AC153 3rd Priority Annunciator Control Unit is used to provide a third level of signaling priority, for applications such as fire/heat/smoke detection and/or code call capabilities with the AlphaLinQ 100 series visual nurse-call system, but can be used and is backwards compatible with some older systems as well.One AC153 is required per system, in addition to the AC152 control unit(s). No additional transformer is required. The AC153 contains the electronic circuitry necessary to detect the presence of 3rd priority calls, and to generate audible and visual control signals. It provides rapidly pulsating voltages to operate visual signaling devices.