system sensor cigarette smoke detector alarm

cigarette smoke detector SD-600 2-wire network type photoelectronic smoke detector Main feature: 1.Power supply non-polar input 2.Infrared photoelectronic sensor 3.MCU processing adopted, eliminate false alarm 4.Network output/LED indicating alarm 5.SMT manufactire technology, high stability 6.Dustproof, mothproof, anti-light interference design 7.Stain steeless shield, anti-RFI(20V/m-1GHz) 8.Execute criterion:GB4715;EN54-7;UL268 Technical specification: 1.Operating voltage