cost effective fire alarm replacement

warehouse fire detection -- Wanlin Fire Protection, 12-year Chinese smart fire protection product manufacturer, WL-SFP900 (Complete Home Fire Safety DIY Kit) certified EN54/EN14604/EN50291/CE. 4G Smoke Detector x3 + CO Detector x1 + Heat Detector x1 + Smart Plug x1 + Mobile App + Cl. MOQ from 100 units, OEM/ODM from 500 units, 15-20 day delivery, 60+ countri···