Edwards Signaling, Smoke Alarm, models:

517T Series	Installation Instructions Manual
517TCS Series	Installation Instructions Manual
517TCSB Series	Installation Instructions Manual
517TH Series	Installation Instructions Manual
E-SDPCB	Installation Sheet
SuperDuct ESD-2W	Manual
SuperDuct ESD-4WJ	Technical Bulletin
SuperDuct ESD-SJ	Installation Sheet