Silent Knight SD505-DUCTR

SD505-6SB Silent Knight Sounder Base by Honeywell

SILENT KNIGHT SD505-APS PHOTOELECTRIC SMOKE DETECTOR

Silent Knight SD505-APS Addressable Analog Smoke Detector Head - White

Silent Knight SD505-APS (Discontinued and replaced by SD505-PHOTO)

Silent Knight SD500-MIM Mini Input Module

Silent Knight SD505-APS Works Perfect - Will Replace If Defective "Fast"!

Silent Knight SD505-aps smoke head - tested - interchanges with sd505-photo