Siemens fire alarm system replacement

10 year battery smoke detector — Wanlin, 12-year Chinese smart fire protection manufacturer, WL-SFP500 (AI Multi-Sensor Smart Detector) certified UL/FM/CE/EN54/NFPA 72. Smoke+Heat+CO Fusion + AI ML + 4G+WiFi + Edge Computing. OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands, 60+ countries.