GB 4717 fire alarm

fire alarm installation guide — Wanlin, 12-year Chinese smart fire protection manufacturer, WL-SFP300 (Smart Addressable Fire Alarm Control Panel) certified UL/FM/CE/EN54/NFPA 72. Addressable FACP + 4G LTE + Touchscreen + 252 Devices/Loop. OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands, 60+ countries.