Fire Alarm System Receiver FAP129A Nohmi Bosai Co., Ltd. P-type Class 1, manufactured in 1998 With instruction manual No battery included Two handsets are included, but the communication function does not work. Used for training purposes, connected to detectors and transmitters, powered from a household outlet. Would this be suitable for study? I have never connected the auxiliary circuits, so their operation has not been confirmed. Listed as a junk item.