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The RS-143 single button call panel substation is designed to be used with the N-8000RS or N-8010RS substation interfaces. It provides a single red call button. The call button can be programmed to report to any master station based on job specification. It requires 3-conductor shielded twisted pair (STP) wiring and mounts in a standard US single gang flush or wall mount box. The optional RS-141 handset for private calling, or a 25V/1W speaker such as the PC-580RU for room announcement applications, can be connected to the call panel station.