1.EN14604:2005 certificate approval from LPCB 2.DC 9V battery 3.Product life:10 years 4.Loud 85dB alarm signal Product: Smoke DetectorType: YG001 Product feature:TechnologyAdopt wireless RF technology which is convenient to install, with anti-interference ability and lower cost. ApplicationMatching with the Smart home system, used for security alarm system FeaturePhotoelectric - ideal for ...