System Sensor SR strobe used

System Sensor SCR Fire Alarm Strobe Red Ceiling Mount NO BACKPLATE USED

System Sensor PC2RL Fire Alarm Horn Strobe Ceiling Red No Mounting Plate

System Sensor SCW Fire Alarm Strobe Ceiling White

System Sensor S2475 SpectrAlert Red Fire Alarm Strobe

System Sensor SRL Wall Strobe Fire Alarm, Red, 2-Wire Indoor Clear Lens

System Sensor PC2W Fire Alarms Horn Strobe Wall Mount White Horn/Strobe

System Sensor MASS2415ADA Sounder Strobe 15cd 24vdc red wall; NOS Brand New