Smoke Detector/Fire Alarm (SD119)

chinacoal05Product Introduction1)SD119 have UL268/521 and EN54-5/7 approvals2)2 or 4 wire3)5 year limited warranty4) Advanced detection and discrimination algorithms5) Easy installation and maintenance6) Polished low-profile housing design7) Durable sensor head, no need for replacement8) SMD circuit board design: Satisfactory quality and reliability guaranteed9) Integrated heat detector for SD119-2H and SD119-4H models10) N/C (normal / close) and N/O (normal / open) relay